九天国际教育GCSE真题November 2013 (v3) QP - Paper 1 CIE Chemistry IGCSE

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九天国际教育GCSE真题June 2013 (v3) QP - Paper 3 CIE Chemistry IGCSE

九天国际教育GCSE真题June 2013 (v3) QP - Paper 3 CIE Chemistry IGCSE

READ THESE INSTRUCTIONS FIRSTWrite your Centre number, candidate number and name on all the work you hand in.Write in dark blue or black pen.You may use a pencil for any diagrams, graphs or rough working.Do not use staples, paper clips, highlighters, glue or correction fl uid.DO NOT WRITE IN ANY BARCODES.Answer all questions.Electronic calculators may be used.A copy of the Periodic Table is printed on page 12.You may lose marks if you do not show your working or if you do not use appropriate units.At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question.CHEMISTRY0620/33Paper 3 (Extended)May/June 20131 hour 15 minutesCandidates answer on the Question Paper.No Additional Materials are required.UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certifi cate of Secondary EducationThis document consists of 11 printed pages and 1blank page.[Turn overIB13 06_0620_33/2RP © UCLES 2013*6258911381*For1S ubstances can be classifi ed as:Examiner’sUseelements mixtures compoundsE lements can be divided into:metals non-metals(a)D efi ne each of the following terms.(i)e lement.................................................................................................................................... (2)(ii)c ompound.................................................................................................................................... (2)(iii)m ixture.................................................................................................................................... (1)(b)C lassify each of the following as either an element, compound or mixture.(i)b rass (1)(ii)c arbon dioxide (1)(iii)c opper (1)(c)W hich physical property is used to distinguish between metals and non-metals?I t is possessed by all metals but by only one non-metal. (1)[Total: 9]© UCLES 20130620/33/M/J/13For2O ne of the factors which determine the reaction rate of solids is particle size.Examiner’sUse(a)A mixture of fi nely powdered aluminium and air may explode when ignited.A n explosion is a very fast exothermic reaction. This causes a large and sudden increasein temperature.E xplain each of the following in terms of collisions between reacting particles.(i)W hy is the reaction between fi nely powdered aluminium and air very fast?.................................................................................................................................... (2)(ii)E xplain why for most reactions the rate of reaction decreases with time..................................................................................................................................... (2)(iii)S uggest an explanation why the rate of reaction in an explosion could increase rather than decrease with time......................................................................................................................................................................................................................................................................... (3)(b)(i)G ive another example of a substance other than a metal which, when fi nelypowdered, might explode when ignited in air. (1)(ii)D escribe a simple test-tube reaction which shows the effect of particle size on the rate at which a solid reacts with a solution......................................................................................................................................................................................................................................................................... (3)[Total: 11]© UCLES 2013[Turn over0620/33/M/J/130620/33/M/J/13© UCLES 2013ForExaminer’sUse3I ron from the blast furnace is impure. It contains 5% of impurities, mainly carbon, sulfur, silicon and phosphorus. Almost all of this impure iron is converted into the alloy, mild steel.(a) (i) S tate a use of mild steel. (1)(ii) N ame and give a use of another iron-containing alloy.name ..........................................................................................................................use (2)(b) T he oxides of carbon and sulfur are gases. The oxides of silicon and phosphorus are not.Explain how these impurities are removed from the impure iron when it is converted into mild steel............................................................................................................................................ ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... (5)[Total: 8]4G ermanium is an element in Group IV. The electron distribution of a germanium atom is 2 + 8 + 18 + 4. It has oxidation states of +2 and +4.(a) G ermanium forms a series of saturated hydrides similar to the alkanes.(i) D raw the structural formula of the hydride which contains three germanium atomsper molecule.[1](ii) P redict the general formula of the germanium hydrides. (1)0620/33/M/J/13© UCLES 2013[Turn overFor Examiner’sUse(b) D raw a diagram showing the arrangement of the valency electrons in one molecule ofthe covalent compound germanium(IV ) chloride, GeC l 4.Use o to represent an electron from a chlorine atom.Use x to represent an electron from a germanium atom.[2](c) D escribe the structure of the giant covalent compound germanium(IV ) oxide, GeO 2.I t has a similar structure to that of silicon(IV ) oxide............................................................................................................................................ ........................................................................................................................................... (3)(d) I s the change GeC l 2 to GeC l 4 reduction, oxidation or neither? Give a reason for your choice............................................................................................................................................ (2)[Total: 9]5A ll metal nitrates decompose when heated. A few form a nitrite and oxygen. Most form the metal oxide, oxygen and a brown gas called nitrogen dioxide.(a) (i) N ame a metal whose nitrate decomposes to form the metal nitrite and oxygen. (1)(ii) C omplete the equation for the action of heat on lead(II ) nitrate.......Pb(NO 3)2 → ......... + ......NO 2 + O 2 [2](iii) S uggest why the nitrate of the metal, named in (a)(i), decomposes less readily thanlead(II ) nitrate..................................................................................................................................... (2)0620/33/M/J/13© UCLES 2013For Examiner’sUse(b) A lmost all samples of nitrogen dioxide are an equilibrium mixture of nitrogen dioxide,NO 2, and dinitrogen tetroxide, N 2O 4.forward reactionreverse reactionN 2O 4(g)colourless2NO 2(g)dark brownI n the forward reaction, a bond forms between the two nitrogen dioxide molecules.NO 2 + NO 2 → O 2N – NO 2(i) E xplain the term equilibrium mixture ..................................................................................................................................... .............................................................................................................................. [1] (ii) T he syringe contains a sample of the equilibrium mixture. The plunger was pulledback reducing the pressure.H ow would the colour of the gas inside the syringe change? Give an explanation foryour answer..................................................................................................................................... .................................................................................................................................... .............................................................................................................................. [3] (iii) A sealed tube containing an equilibrium mixture of nitrogen dioxide and dinitrogentetroxide was placed in a beaker of ice cold water. T he colour of the mixture changed from brown to pale yellow.I s the forward reaction exothermic or endothermic? Give an explanation for your choice..................................................................................................................................... (2)(iv) W hat other piece of information given in the equation supports your answer to (iii)?NO 2 + NO 2 → O 2N–NO 2 (1)[Total: 12]0620/33/M/J/13© UCLES 2013[Turn overForExaminer’sUse6S ulfuric acid and malonic acid are both dibasic acids. One mole of a dibasic acid can form two moles of hydrogen ions.H 2SO 4 → 2H + + SO 42–D ibasic acids can form salts of the type Na 2X and CaX.(a) M alonic acid is a white crystalline solid which is soluble in water. It melts at 135 °C.T he structural formula of malonic acid is given below. It forms salts called malonates.CH 2(COOH)2 or HOOC – CH 2 – COOH(i) H ow could you determine if a sample of malonic acid is pure?technique used .......................................................................................................... result if pure (2)(ii) W hat is the molecular formula of malonic acid? (1)(iii) W hen malonic acid is heated there are two products, carbon dioxide and a simplercarboxylic acid. Deduce the name and molecular formula of this acid..................................................................................................................................... .............................................................................................................................. [2] (iv) M alonic acid reacts with ethanol to form a colourless liquid which has a ‘fruity’ smell.I ts structural formula is given below.CC OOO OCH2CH 2CH 3CH 2CH 3W hat type of compound contains the group which is circled? (1)0620/33/M/J/13© UCLES 2013For Examiner’sUse(b) (i) S uggest why a solution of malonic acid, concentration 0.2 mol / dm 3, has a higher pHthan one of sulfuric acid of the same concentration. (1)(ii) D escribe a test, other than measuring pH, which can be carried out on both acidsolutions to con fi rm the explanation given in (b)(i) for the different pH values of the two acids..................................................................................................................................... (2)(c) C omplete the following equations for reactions of these two acids.(i) sodium hydroxide + malonic acid → .................... + ....................[1].................... (ii) CuO + H 2SO 4 → .................... + .................... [2] (iii) Mg + CH 2(COOH)2 → .................... + ....................[2](iv) K 2CO 3 + H 2SO 4 → .................... + .................... + ....................[2][Total: 16]7 A lkanes and alkenes are both series of hydrocarbons.(a) (i) E xplain the term hydrocarbon ..................................................................................................................................... (1)(ii) W hat is the difference between these two series of hydrocarbons?.................................................................................................................................... (2)(b) A lkenes and simpler alkanes are made from long-chain alkanes by cracking.C omplete the following equation for the cracking of the alkane C 20H 42.C 20H 42 → 2C 4H 8 + 2C 2H 4 + ...............[1]0620/33/M/J/13© UCLES 2013[Turn overForExaminer’sUse(c) Alkenes such as butene and ethene are more reactive than alkanes.A lkenes are used in the petrochemical industry to make a range of products, which includes polymers and alcohols.(i) D ibromoethane is used as a pesticide. Complete the equation for its preparationfrom ethene.C C + Br 2 →HHH H[1](ii) T he structural formula of a poly(alkene) is given below.nC CH 3C CH 3HHD educe the structural formula of its monomer.[2](iii) H ow is butanol made from butene, CH 3 – CH 2 – CH = CH 2? Include an equation in your answer..................................................................................................................................... (2)(iv)C racking changes alkanes into alkenes. How could an alkene be converted into analkane? Include an equation in your answer..................................................................................................................................... (2)0620/33/M/J/13© UCLES 2013ForExaminer’sUse(d) 20 cm 3 of a hydrocarbon was burnt in 175 cm 3 of oxygen. After cooling, the volume ofthe remaining gases was 125 cm 3. The addition of aqueous sodium hydroxide removed carbon dioxide leaving 25 cm 3 of unreacted oxygen.(i) v olume of oxygen used = .......... cm 3 [1] (ii) v olume of carbon dioxide formed = .......... cm 3 [1](iii) D educe the formula of the hydrocarbon and the balanced equation for the reaction..................................................................................................................................... .................................................................................................................................... .................................................................................................................................... (2)[Total: 15]11BLANK PAGEPMT12Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included the publisher will be pleased to make amends at the earliest possible opportunity.University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.G ro u p140C eC e r i u m 58141P rP r a s e o d y m i u m 59144N d N e o d y m i u m 60P mP r o m e t h i u m61150S mS a m a r i u m62152E uE u r o p i u m63157G dG a d o l i n i u m64159T bT e r b i u m65162D yD y s p r o s i u m66165H oH o l m i u m67167E rE r b i u m68169T mT h u l i u m69173Y bY t t e r b i u m70175L uL u t e t i u m71232T hT h o r i u m 90P aP r o t a c t i n i u m 91238UU r a n i u m92N pN e p t u n i u m93P uP l u t o n i u m94A mA m e r i c i u m95C mC u r i u m96B kB e r k e l i u m97C fC a l i f o r n i u m98E sE i n s t e i n i u m99F mF e r m i u m100M dM e n d e l e v i u m101N oN o b e l i u m102L rL a w r e n c i u m1031HH y d r o g e n17L iL i t h i u m 323N aS o d i u m 1124M gM a g n e s i u m1240C aC a l c i u m 2045S c S c a n d i u m 2148T i T i t a n i u m2251V V a n a d i u m 2352C r C h r o m i u m 2455M n M a n g a n e s e 2556F e I r o n 2659C o C o b a l t 2759N i N i c k e l 2864C u C o p p e r 2965Z nZ i n c3070G aG a l l i u m3127A lA l u m i n i u m1311B B o r o n 512C C a r b o n614NN i t r o g e n716OO x y g e n819FF l u o r i n e928S iS i l i c o n1431PP h o s p h o r u s1532SS u l f u r1635.5C lC h l o r i n e1740A rA r g o n1820N eN e o n104H eH e l i u m273G eG e r m a n i u m3275A sA r s e n i c3379S eS e l e n i u m3480B rB r o m i n e3584K rK r y p t o n3639KP o t a s s i u m 1988S rS t r o n t i u m 3889Y Y t t r i u m 3991Z r Z i r c o n i u m4093N b N i o b i u m 4196M o M o l y b d e n u m 42T c T e c h n e t i u m 43101R u R u t h e n i u m 44103R h R h o d i u m 45106P d P a l l a d i u m 46108A gS i l v e r47112C dC a d m i u m48115I nI n d i u m49119S nT i n50122S bA n t i m o n y51128T eT e l l u r i u m52127II o d i n e53131X eX e n o n54137B aB a r i u m 56139L a L a n t h a n u m 57*178H fH a f n i u m72181T a T a n t a l u m 73184W T u n g s t e n 74186R e R h e n i u m 75190O s O s m i u m 76192I rI r i d i u m 77195P t P l a t i n u m78197A uG o l d79201H gM e r c u r y80204T lT h a l l i u m81207P bL e a d82209B iB i s m u t h83P oP o l o n i u m84A tA s t a t i n e85R nR a d o n86F rF r a n c i u m 87227A cA c t i n i u m899B eB e r y l l i u m4II I I I II V V V I V I I 085R bR u b i d i u m 37133C sC a e s i u m 55226R a R a d i u m 88T h e v o l u m e o f o n e m o l e o f a n y g a s i s 24d m 3a t r o o m t e m p e r a t u r e a n d p r e s s u r e (r .t .p .).a Xb a = r e l a t i v e a t o m ic m a s sX = a t o m i c s y m b o lb = p r o t o n (a t o m ic ) n u m b e rK e y *58-71 L a n t h a n o i d s e r i e s 90-103 A c t i n o i d s e r i e s D A T A S H E E T T h e P e r i o d i c T a b l e o f t h e E l e m e n t sPMT。

九天国际教育GCSE真题June 2013 (R) QP - Paper 1C Edexcel Chemistry IGCSE

九天国际教育GCSE真题June 2013 (R) QP - Paper 1C Edexcel Chemistry IGCSE

Turn overP43317A ©2013 Pearson Education Ltd.1/1/1/1/*P43317A0136*Instructionst Use black ink or ball-point pen.t Fill in the boxes at the top of this page with your name,centre number and candidate number.t Answer all questions.t A nswer the questions in the spaces provided– there may be more space than you need.t Show all the steps in any calculations and state the units.tInformationt The total mark for this paper is 120.t T he marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question.Advicet Read each question carefully before you start to answer it.t Keep an eye on the time.t Write your answers neatly and in good English.t Try to answer every question.t Check your answers if you have time at the end.2*P43317A0236*3*P43317A0336*Turn overBLANK PAGE4*P43317A0436*5*P43317A0536*Turn over(c) State which one of the gases in the table is used in(i) the manufacture of ammonia(1)....................................................................................................................................................................................................................................................................................(ii) the manufacture of fire extinguishers(1)....................................................................................................................................................................................................................................................................................(iii) the manufacture of fizzy drinks(1)....................................................................................................................................................................................................................................................................................(Total for Question 1 = 8 marks)6*P43317A0636*7*P43317A0736*Turn over(c) The Taj Mahal is a famous building in India. It is made out of a form of calcium carbonatecalled marble.The appearance of the marble has changed gradually over the years because of the effects of sulfur dioxide in the atmosphere.Describe how sulfur dioxide has caused this change in appearance.(3)................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(Total for Question 2 = 6 marks)8*P43317A0836*9*P43317A0936*Turn over10*P43317A01036*(c) The ionic half-equation for the reaction at the negative electrode isAl3+ + 3e–o AlWhat type of reaction is occurring at the negative electrode?Explain your answer.(2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(d) The waste gases escaping from the electrolysis cell contain carbon dioxide.Describe how the carbon dioxide is formed.(2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(e) Aluminium is used to make cans for food and drinks.State two properties of aluminium that make it suitable for this use.You should not refer to cost in your answers.(2)1 ................................................................................................................................................................................................................................................................................2 ................................................................................................................................................................................................................................................................................(Total for Question 4 = 10 marks)(c) Heptane belongs to a homologous series of compounds called alkanes. The general formula of the alkanes is C n H 2n+2(i) Heptene belongs to a homologous series of compounds called alkenes.Give the general formula of the alkenes.(1)....................................................................................................................................................................................................................................................................................(ii) Complete the following diagram to show the structural formula of heptene (C 7H 14)by inserting lines to represent the covalent bonds between the carbon atoms.(2)C C C C C C C HHHHHHHHHHHHHH(d) When heptene is added to bromine water, and the mixture is shaken, a reaction occurs.State the type of reaction and give the colour of the bromine water before and after the reaction with heptene.(3)Type of reaction ........................................................................................................................................................................................................................................Colour before ..............................................................................................................................................................................................................................................Colour after ...................................................................................................................................................................................................................................................(e) Explain, in terms of the bonds present, why heptane is described as saturated andheptene as unsaturated.(2)................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(Total for Question 5 = 11 marks)BLANK PAGE(c) Chlorine can be used to obtain bromine (Br2)from sea water.Sea water contains bromide ions, Br—The pH of sea water is usually within the range of 7.5 to 8.4The stages in the extraction of bromine from sea water areStage 1 T he pH of the sea water is lowered to about 3.5Stage 2 A n excess of chlorine is bubbled through the sea waterStage 3 T he bromine (Br2)is removed from the mixture and reacted withsulfur dioxide (SO2) and water. This reaction converts the bromine tohydrogen bromide (HBr) and sulfuric acid (H2SO4)Stage 4 T he hydrogen bromide is reacted with chlorine to form bromine (Br2)(i) Suggest a substance that could be added to lower the pH of sea water in Stage 1.(1) ....................................................................................................................................................................................................................................................................................(ii) Why is an excess of chlorine added in Stage 2?(1) ....................................................................................................................................................................................................................................................................................(iii) Write a chemical equation for the reaction in Stage 3.(2) ....................................................................................................................................................................................................................................................................................(iv) Write a chemical equation for the reaction in Stage 4.(1) ....................................................................................................................................................................................................................................................................................(d) State the colour change observed when bromine is added to an aqueous solutionof potassium iodide.(2) Colour of potassium iodide solution at start .............................................................................................................................................................. Colour of final reaction mixture...............................................................................................................................................................................................(Total for Question 6 = 16 marks)BLANK PAGEA andB represent experiments using the same concentration of(i) Experimentshydrochloric acid but at different temperatures.Which letter represents the experiment at the higher temperature?Give a reason for your choice.(2)Letter .................................................................................................................................................................................................................................................................. Reason .............................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................B andC represent experiments at the same temperatures and(ii)Experimentsusing the same volumes of hydrochloric acid.The concentration of hydrochloric acid used in experiment B is 0.20 mol/dm3.What is the concentration of hydrochloric acid used in experiment C?Explain how you worked out your answer.(2) Concentration ........................................................................................................................................................................................................................................... Explanation .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(iii) Explain why increasing the concentration has this effect on the rate of reaction.(3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(Total for Question 7 = 16 marks)8 A student was asked by his teacher to perform a flame test on a solid.He used this method.x dip the tip of a clean platinum wire into hydrochloric acid and then into the solidx adjust the air hole of the Bunsen burner to obtain a non-roaring, non-luminous Bunsen flamex place the tip of the platinum wire into the edge of the flamex observe the colour in the flame(a) (i) Why is it important that the platinum wire is clean?(1) .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(ii) Why is it important to use a non-luminous flame?(1) .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(iii) What colour would be observed in the flame if the solid contained sodium ions?(1) ....................................................................................................................................................................................................................................................................................(b) A student poured a solution containing 0.010mol of hydrochloric acid into a beaker.He then added 0.0075mol of zinc powder and collected the hydrogen given off ina gas syringe.The equation for the reaction isZn(s) + 2HCl(aq) o ZnCl2(aq) + H2(g)Is the zinc or the hydrochloric acid in excess? Explain your answer.(2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(c) The student repeated the experiment with 0.0075mol of magnesium powderwith the same total surface area as the zinc.The equation for the reaction isMg(s) + 2HCl(aq) o MgCl2(aq) + H2(g)(i) What effect would this change have on the rate at which the hydrogen isgiven off?(1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(ii) What effect would this change have on the volume of hydrogen produced?(1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(Total for Question 9 = 9 marks)(iii) What happens to the unreacted nitrogen and hydrogen?(1)....................................................................................................................................................................................................................................................................................(d) The reaction would be faster if a higher temperature were used.Suggest why a higher temperature is not used in the Haber process.(1)............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(e) The equation for the formation of ammonia isN 2(g) + 3H 2(g) U 2NH 3(g)(i) Calculate the amount, in moles, of ammonia, that could be formed in theHaber process from 112 kilograms of nitrogen, assuming all the nitrogen is converted into ammonia.(3)Amount of ammonia =....................................................... mol(ii) Only 15% of the nitrogen is converted into ammonia.Calculate the actual amount, in moles, of ammonia that is formed from 112 kilograms of nitrogen.(1)Amount of ammonia =....................................................... mol (Total for Question 10 = 15 marks)31*P43317A03136*Turn over32*P43317A03236*33*P43317A03336*BLANK PAGE34*P43317A03436*35*P43317A03536*BLANK PAGEBLANK PAGE36*P43317A03636*。

九天国际教育GCSE真题November 2010 (v3) QP - Paper 5 CIE Chemistry IGCSE

九天国际教育GCSE真题November 2010 (v3) QP - Paper 5 CIE Chemistry IGCSE

READ THESE INSTRUCTIONS FIRSTWrite your Centre number, candidate number and name on all the work you hand in.Write in dark blue or black pen.You may use a pencil for any diagrams, graphs or rough working.Do not use staples, paper clips, highlighters, glue or correction fl uid.DO NOT WRITE IN ANY BARCODES.Answer all questions.Practical notes are provided on page 8.At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question.CHEMISTRY0620/53Paper 5 Practical TestOctober/November 20101 hour 15 minutesCandidates answer on the Question Paper.Additional Materials:As listed in the Con fidential InstructionsUNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certi fi cate of Secondary EducationThis document consists of 6 printed pages and 2blank pages.[Turn overIB10 11_0620_53/3RP © UCLES 2010*3216989122*For Examiner’s Use Total12For Examiner’sUse1Y ou are going to investigate what happens when dilute hydrochloric acid reacts with two different alkaline solutions, F and G .R ead all instructions below carefully before starting the experiments. I nstructions Y ou are going to carry out two experiments. (a) E xperiment 1 Fill the burette with the dilute hydrochloric acid provided to the 0.0 cm 3 mark.U sing a measuring cylinder, pour 25 cm 3 of solution F into a conical fl ask. Add 4 to 6drops of phenolphthalein indicator to the conical fl ask.A dd the hydrochloric acid from the burette 1 cm 3 at a time while shaking the fl ask. When the colour of the phenolphthalein changes, record in the table the volume of acid added.(b) E xperiment 2 Fill the burette with dilute hydrochloric acid to the 0.0 cm 3 mark.E mpty the conical fl ask and rinse it with water. Using a measuring cylinder, pour 25 cm 3of solution G into the conical fl ask. Add 4 to 6 drops of phenolphthalein to the conical fl ask.A dd the hydrochloric acid from the burette 1 cm 3 at a time while shaking the flask. When the colour of the phenolphthalein changes, record in the table the volume of acid added.experimentsolution volume of hydrochloric acidadded / cm 31F 2G[4]ForExaminer’sUse(c) W hat colour change was observed when hydrochloric acid was added to the conicalfl ask?from ....................................................... to .......................................................[2](d) (i) W hich ion is present in all alkaline solutions? (1)(ii) W hat type of chemical reaction occurs when hydrochloric acid reacts with alkalinesolutions? (1)(e) (i) I n which Experiment was the greatest volume of hydrochloric acid used? (1)(ii) C ompare the volumes of hydrochloric acid used in Experiments 1 and 2. (1)(iii) S uggest an explanation for the difference in volumes..................................................................................................................................... .................................................................................................................................... (2)(f) I f Experiment 2 were repeated using 12.5 cm 3 of solution G , what volume of hydrochloricacid would be used? Explain your answer............................................................................................................................................ (2)(g) (i) S tate two sources of error in the experiments.1 ................................................................................................................................. 2 (2)(ii) S uggest two improvements to reduce the sources of error in the experiments.1 ................................................................................................................................. 2 (2)[Total: 18]ForExaminer’sUse2 Y ou are provided with two different salts, W and X . C arry out the following tests on each salt, recording all of your observations in the table. Conclusions must not be written in the table.testsobservationstests on solid W(a) D escribe the appearance of solid W . (1)(b) P lace half of solid W in a test-tube.Heat the test-tube gently . Test any gas given off with damp pH indicator paper (2)(c) A dd the rest of solid W to about 6 cm 3 of distilled water in a test-tube. C ork the test-tube and shake thecontents until dissolved. D ivide the solution into 3 equalportions in test-tubes and carry out the following tests.(i) A dd about 1 cm 3 of dilutehydrochloric acid to the fi rst portion of the solution and then add aqueous barium chloride. (ii) A dd about 1 cm 3 of dilute nitric acid to the second portion ofthe solution and then add silver nitrate solution. (iii) T o the third portion of the solutionadd about 1 cm 3 of aqueoussodium hydroxide. Heat the mixture gently and test any gasesgiven off with damp pH indicator paper............................................................................................................................................................. [2]........................................................................... [1] (2)ForExaminer’sUsetestsobservationstests on solid X(d) R epeat experiment (b) using abouthalf of the solid X . Leave the test-tube and contents to cool. This will be used in test (f) (2)(e) D issolve the rest of solid X inabout 4 cm 3 of distilled water in a test-tube. Divide the solution into 3 equal portions in test-tubes and carry out the following tests.(i) T o the fi rst portion, add excessaqueous sodium hydroxide. (ii) T o the second portion, add afew drops of hydrochloric acid, followed by aqueous barium chloride. (iii) T o the third portion, add aqueous potassium manganate(VII ) drop by drop............................................................................................................................................................. [2]........................................................................... [1] (1)(f) U sing a teat pipette, add drops of cold water to the test-tube and contents from test (d)............................................................................................................................................................. [2] (g) I dentify the gas given off in test (b)...................................................................................................................................... [1] (h) W hat conclusions can you draw about solid W ?........................................................................................................................................... ..................................................................................................................................... [2] (i) I dentify solid X ............................................................................................................................................ ........................................................................................................................................... (3)[Total: 22]Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included the publisher will be pleased to make amends at the earliest possible opportunity.University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.NOTES FOR USE IN QUALITATIVE ANALYSISTest for anions aniontesttest resultcarbonate (CO 32–)add dilute acideffervescence, carbon dioxide produced chloride (C l –)[in solution]acidify with dilute nitric acid, then add aqueous silver nitrate white ppt.iodide (I –)[in solution]acidify with dilute nitric acid, then add aqueous silver nitrate yellow ppt.nitrate (NO 3–)[in solution]add aqueous sodium hydroxide then aluminium foil; warm carefully ammonia produced sulfate (SO 42–)[in solution]acidify with dilute nitric acid, then aqueous barium nitratewhite ppt.Test for aqueous cations cationeffect of aqueous sodium hydroxide effect of aqueous ammonia aluminium (A l 3+)white ppt., soluble in excess giving a colourless solutionwhite ppt., insoluble in excess ammonium (NH 4+)ammonia produced on warming –calcium (Ca 2+)white ppt., insoluble in excess no ppt., or very slight white ppt.copper (Cu 2+)light blue ppt., insoluble in excess light blue ppt., soluble in excess giving a dark blue solution iron(II ) (Fe 2+)green ppt., insoluble in excess green ppt., insoluble in excess iron(III ) (Fe 3+)red-brown ppt., insoluble in excess red-brown ppt., insoluble in excess zinc (Zn 2+)white ppt., soluble in excess giving a colourless solutionwhite ppt., soluble in excess giving a colourless solutionTest for gases gastest and test resultsammonia (NH 3)turns damp red litmus paper blue carbon dioxide (CO 2)turns limewater milky chlorine (C l 2)bleaches damp litmus paper hydrogen (H 2)‘pops’ with a lighted splint oxygen (O 2)relights a glowing splint。

九天国际教育GCSE真题November 2016 (v3) QP - Paper 4 CIE Chemistry IGCSE

九天国际教育GCSE真题November 2016 (v3) QP - Paper 4 CIE Chemistry IGCSE

READ THESE INSTRUCTIONS FIRSTWrite your Centre number, candidate number and name on all the work you hand in.Write in dark blue or black pen.You may use an HB pencil for any diagrams or graphs.Do not use staples, paper clips, glue or correction fluid.DO NOT WRITE IN ANY BARCODES.Answer all questions.Electronic calculators may be used.A copy of the Periodic Table is printed on page 12.You may lose marks if you do not show your working or if you do not use appropriate units.At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question.CHEMISTRY0620/43Paper 4 Theory (Extended)October/November 20161 hour 15 minutesCandidates answer on the Question Paper.No Additional Materials are required.Cambridge International ExaminationsCambridge International General Certificate of Secondary EducationThis document consists of 12 printed pages.[Turn overIB16 11_0620_43/4RP © UCLES 2016The syllabus is approved for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate.0620/43/O/N/16© UCLES 20161(a) C omplete the table.particle charge relative massproton +1neutron 1electron[2](b) T he following are isotopes of carbon.C 126 C 136 C146 (i) I n terms of numbers of protons, neutrons and electrons, how are these three isotopes thesame and how are they different?T hey are the same because ............................................................................................... .............................................................................................................................................T hey are different because ................................................................................................. .............................................................................................................................................[3] (ii) W hy do all isotopes of carbon have the same chemical properties? (1)(c) N ame two forms of the element carbon which have giant covalent structures............................................................... and ........................................................................ [1] (d) C omplete the diagram to show the electron arrangement in a carbon dioxide molecule.S how the outer shell electrons only.O CO[2][Total: 9]2B eryllium is a metallic element in Group II.(a)G ive the electronic structure of a beryllium atom. (1)(b)G ive the formula of beryllium oxide. (1)(c)(i) D escribe the bonding in a metallic element such as beryllium.I nclude a labelled diagram and any appropriate charges in your answer........................................................................................................................................................................................................................................................................................... (3)(ii)E xplain why metallic elements, such as beryllium, are good conductors of electricity.............................................................................................................................................. (1)(d)B eryllium hydroxide is amphoteric.B eryllium hydroxide reacts with acids. The salts formed contain positive beryllium ions.(i)G ive the formula of the positive beryllium ion. (1)(ii)W rite a chemical equation for the reaction between beryllium hydroxide and hydrochloric acid. (2)(iii)B eryllium hydroxide also reacts with alkalis. The salts formed contain beryllate ions, BeO2–.2S uggest a chemical equation for the reaction between beryllium hydroxide andsodium hydroxide solution. (2)[Total: 11]© UCLES 2016[Turn over0620/43/O/N/163W hen lead(II) nitrate is heated, two gases are given off and solid lead(II) oxide remains.T he equation for the reaction is shown.2Pb(NO3)2(s) → 2PbO(s) + 4NO2(g) + O2(g)(a)C alculate the Mrof lead(II) nitrate. (1)(b)6.62 g of lead(II) nitrate are heated until there is no further change in mass.(i)C alculate the mass of lead(II) oxide produced............................ g [2](ii)C alculate the volume of oxygen, O2, produced at room temperature and pressure (r.t.p.)............................ dm3 [2](c)D escribe a test for oxygen.t est .............................................................................................................................................r esult ..........................................................................................................................................[2]0620/43/O/N/16© UCLES 2016(d)L ead(II) oxide is insoluble. A student adds solid lead(II) oxide to dilute nitric acid until thelead(II) oxide is in excess. Aqueous lead(II) nitrate and water are produced.(i)W hat is meant by the term excess? (1)(ii)H ow would the student know when the lead(II) oxide is in excess? (1)(iii)W rite a chemical equation for the reaction. (1)[Total: 10]© UCLES 2016[Turn over0620/43/O/N/164S ilicon(IV) oxide and sodium chloride have different types of bonding and structure.(a)N ame the type of bonding present ins ilicon(IV) oxide, .......................................................................................................................s odium chloride. ........................................................................................................................[2](b)N ame the type of structure present in silicon(IV) oxide. (1)(c) (i)S ilicon(IV) oxide has a high melting point. Explain why.............................................................................................................................................. (2)(ii)S ilicon(IV) oxide is a poor conductor of electricity. Explain why. (1)(d)S olid sodium chloride does not conduct electricity. However, it conducts electricity when molten.E xplain why solid sodium chloride does not conduct electricity, whereas molten sodium chloridedoes conduct electricity............................................................................................................................................................................................................................................................................................................................................................................................................................................................. (3)(e)A concentrated aqueous solution of sodium chloride is electrolysed using carbon electrodes.(i)N ame the products formed at the electrodes.p roduct at the positive electrode (anode) ...........................................................................p roduct at the negative electrode (cathode) .......................................................................[2](ii)W rite an ionic half-equation for the reaction occurring at the negative electrode. (1)© UCLES 20160620/43/O/N/16(f)A dilute aqueous solution of sodium chloride is electrolysed using carbon electrodes.N ame the main product formed at the positive electrode. (1)(g)M olten sodium chloride is electrolysed using carbon electrodes.(i)N ame the product formed at the negative electrode. (1)(ii)Write an ionic half-equation for the reaction occurring at the negative electrode. (1)(iii)C hlorine is produced at the positive electrode.G ive the test for chlorine.test ......................................................................................................................................result ...................................................................................................................................[2][Total: 17]© UCLES 2016[Turn over0620/43/O/N/165S ulfuric acid can be manufactured from the raw materials sulfur, air and water. The process can be divided into four stages.s tage 1converting sulfur into sulfur dioxides tage 2converting sulfur dioxide into sulfur trioxides tage 3converting sulfur trioxide into oleum, H2S2O7s tage 4converting oleum into sulfuric acidstage 1(a) (i)D escribe how sulfur is converted into sulfur dioxide. (1)(ii)W rite a chemical equation for the conversion of sulfur into sulfur dioxide. (1)stage 2(b)S ulfur dioxide is converted into sulfur trioxide according to the following equation.2SO2 + O22SO3T he reaction is carried out at a temperature of 450 °C and a pressure of 1–2 atmospheres using a catalyst. The energy change, ∆H, for the reaction is –196 kJ / mol.(i)W hat is the meaning of the symbol ? (1)(ii)N ame the catalyst used in this reaction. (1)(iii)W hy is a catalyst used? (1)(iv)I f a temperature higher than 450 °C were used, what would happen to the amount of sulfur trioxide produced? Give a reason for your answer.............................................................................................................................................. (2)(v)S uggest a reason why a temperature lower than 450 °C is not used.............................................................................................................................................. (1)0620/43/O/N/16© UCLES 2016(vi)I f a pressure higher than 1–2 atmospheres were used, what would happen to the amount of sulfur trioxide produced? Give a reason for your answer.............................................................................................................................................. (2)stage 3(c) (i)W hat is added to sulfur trioxide to convert it into oleum? (1)(ii)W rite a chemical equation for the conversion of sulfur trioxide into oleum. (1)stage 4(d) (i)W hat is added to oleum to convert it into sulfuric acid? (1)(ii)W rite a chemical equation for the conversion of oleum into sulfuric acid. (1)(e)G ive one use of sulfuric acid. (1)(f)S ulfuric acid reacts with a hydrocarbon called benzene to produce benzenesulfonic acid,C6H5SO3H. Benzenesulfonic acid is a strong acid which ionises to produce hydrogen ions, H+,and benzenesulfonate ions, C6H5SO3–.(i)W hat is meant by the term strong acid? (1)(ii)D escribe how to show that a 1 mol / dm3 solution of benzenesulfonic acid is a strong acid.............................................................................................................................................. (2)(iii)W rite a chemical equation for the reaction between benzenesulfonic acid andsodium carbonate, Na2CO3. (2)[Total: 20]0620/43/O/N/16© UCLES 2016[Turn over0620/43/O/N/16© UCLES 20166 S ynthetic polyamides are made by condensation polymerisation. (a) (i) W hat is meant by the term condensation polymerisation ?............................................................................................................................................. ............................................................................................................................................. ....................................................................................................................................... [3] (ii) Name another type of polymerisation. (1)(b) O ne repeat unit of a synthetic polyamide is represented by the following structure.(i) D raw a ring around the amide link.[1](ii) C omplete the diagrams to show the structures of the monomers used to produce thesynthetic polyamide. Show all the missing atoms and bonds.[2](iii) N ame an example of a synthetic polyamide. (1)(c) P roteins and synthetic polyamides have similarities and differences.(i) N ame the type of compounds that are the monomers used to make up proteins. (1)110620/43/O/N/16© UCLES 2016Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonableeffort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity.To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at after the live examination series.Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.(ii) S tarting with a sample of protein, describe how to produce, separate, detect and identifythe monomers which make it up.Your answer should include • t he name of the process used to break down the protein into its monomers, • t he name of the process used to separate the monomers, • t he method used to detect the monomers after they have been separated, • t he method used to identify the monomers after they have been separated.............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. (4)[Total: 13]PMT120620/43/O/N/16© UCLES 2016G r o u pT h e P e r i o d i c T a b l e o f E l e m e n t s1Hh y d r o g e n12H eh e l i u m4I I I I I II V V V I V I I V I I I3L il i t h i u m 74B eb e r y l l i u m 9a t o m ic n u m b e ra t o m i c s y mb o l K e yn a m er e l a t i v e a t o m i c m a s s 11N as o d i u m 2312M gm a g n e s i u m2419Kp o t a s s i u m 3920C ac a l c i u m 4037R br u b i d i u m 8538S rs t r o n t i u m 8855C sc a e s i u m 13356B ab a r i u m 13787F rf r a n c i u m –88R ar a d i u m –5B b o r o n 1113A l a l u m i n i u m 2731G a g a l l i u m7049I ni n d i u m11581T lt h a l l i u m2046C c a r b o n 1214S i s i l i c o n2832G eg e r m a n i u m7350S nt i n11982P bl e a d20722T i t i t a n i u m 4840Z r z i r c o n i u m 9172H f h a f n i u m 178104R f r u t h e r f o r d i u m –23V v a n a d i u m5141N b n i o b i u m9373T a t a n t a l u m181105D b d u b n i u m–24C r c h r o m i u m 5242M o m o l y b d e n u m 9674W t u n g s t e n 184106S g s e a b o r g i u m –25M n m a n g a n e s e 5543T c t e c h n e t i u m –75R e r h e n i u m 186107B h b o h r i u m –26F e i r o n 5644R u r u t h e n i u m 10176O so s m i u m 190108H s h a s s i u m –27C o c o b a l t 5945R h r h o d i u m 10377I r i r i d i u m 192109M t m e i t n e r i u m –28N i n i c k e l 5946P d p a l l a d i u m 10678P t p l a t i n u m 195110D s d a r m s t a d t i u m–29C u c o p p e r 6447A g s i l v e r 10879A ug o l d197111R gr o e n t g e n i u m–30Z n z i n c 6548C dc ad m i u m11280H gm e r c u r y201112C nc o p e r n i c i u m–114F lf l e r o v i u m–116L vl i v e r m o r i u m–7N n i t r o g e n1415Pp h o s p h o r u s3133A sa r s e n i c7551S ba n t i m o n y12283B ib i s m u t h2098Oo x y g e n1616Ss u l f u r3234S es e l e n i u m7952T et e l l u r i u m12884P op o l o n i u m–9Ff l u o r i n e1917C lc h l o r i n e35.535B rb r o m i n e8053Ii o d i n e12785A ta s t a t i n e–10N en e o n2018A ra r g o n4036K rk r y p t o n8454X ex e n o n13186R nr a d o n–21S c s c a n d i u m 4539Y y t t r i u m 8957–71l a n t h a n o i d s89–103a c t i n o i d s57L al a n t h a n u m 13989A cl a n t h a n o i d sa c t i n o i d sT h e v o l u m e o f o n e m o l e o f a n y g a s i s 24 d m 3 a t r o o m t e m p e r a t u r e a n d p r e s s u r e (r .t .p .).a c t i n i u m –58C e c e r i u m 14090T h t h o r i u m 23259P r p r a s e o d y m i u m14191P a p r o t a c t i n i u m23160N d n e o d y m i u m 14492U u r a n i u m 23861P m p r o m e t h i u m –93N p n e p t u n i u m–62S m s a m a r i u m15094P up l u t o n i u m–63E ue u r o p i u m15295A ma m e r i c i u m–64G dg a d o l i n i u m15796C mc u r i u m–65T bt e r b i u m15997B kb e r k e l i u m–66D yd y s p r o s i u m16398C fc a l i f o r n i um–67H oh o l m i u m16599E se i n s t e i n i u m–68E re r b i u m167100F mf e r m i u m–69T mt h u l i u m169101M dm e n d e l e v i u m–70Y by t t e r b i u m173102N on o b e l i u m–71L ul u t e t i u m175103L rl a w r e n c i u m–PMT。

九天国际教育GCSE真题June 2012 QP - Unit 2 (F) OCR Chemistry (A) GCSE

九天国际教育GCSE真题June 2012 QP - Unit 2 (F) OCR Chemistry (A) GCSE

INSTRUCTIONS TO CANDIDATES •Write your name, centre number and candidate number in the boxes above. Please write clearly and in capital letters.• Use black ink. HB pencil may be used for graphs and diagrams only.• Answer all the questions.• Read each question carefully. Make sure you know what you have to do before startingyour answer.• Write your answer to each question in the space provided. Additional paper may beused if necessary but you must clearly show your candidate number, centre number and question number(s).• Do not write in the bar RMATION FOR CANDIDATES • Y our quality of written communication is assessed in questions marked with a pencil ( ).• The number of marks is given in brackets [ ] at the end of each question or part question.• The total number of marks for this paper is 60.• This document consists of 24 pages. Any blank pages are indicated.• The Periodic T able is printed on the back page.•A list of qualitative tests for ions is printed on page 2.OCR is an exempt CharityTurn over© OCR 2012 [R/601/7592]DC (SHW 00678 4/11) 49642/4*A 135360612*© OCR 2012TWENTY FIRST CENTURY SCIENCE DATA SHEETQualitative analysisTests for ions with a positive chargeIonTestObservationcalcium Ca 2+add dilute sodium hydroxidea white precipitate forms; the precipitate does not dissolve in excess sodium hydroxide copper Cu 2+add dilute sodium hydroxidea light blue precipitate forms; the precipitate does not dissolve in excess sodium hydroxide iron(II )Fe 2+add dilute sodium hydroxidea green precipitate forms; the precipitate does not dissolve in excess sodium hydroxide iron(III )Fe 3+add dilute sodium hydroxidea red-brown precipitate forms; the precipitate does not dissolve in excess sodium hydroxide zinc Zn 2+add dilute sodium hydroxidea white precipitate forms; the precipitate dissolves in excess sodium hydroxideTests for ions with a negative chargeIonTestObservationcarbonate CO 32−add dilute acidthe solution effervesces; carbon dioxide gas is produced (the gas turns lime water from colourless to milky)chloride C l −add dilute nitric acid,then add silver nitrate a white precipitate forms bromide Br −add dilute nitric acid,then add silver nitrate a cream precipitate forms iodide I −add dilute nitric acid,then add silver nitrate a yellow precipitate formssulfate SO 42−add dilute acid,then add barium chloride or barium nitratea white precipitate formsBLANK PAGEQuestion 1 begins on page 4PLEASE DO NOT WRITE ON THIS PAGETurn over © OCR 2012Answer all the questions.1 Joe watches a DVD that shows how some Group 7 elements react with iron.Joe makes some notes about what he sees.fluorineF Most reactive element in the group. Explosive reaction with iron.chlorineC l Very bright flame, iron burns away quickly.bromineBr Less bright flame, takes longer for reaction with iron to finish.iodineIastatineAt(a)What do Joe’s notes show about the trend in reactivity down Group 7?................................................................................................................................................... (1)(b)The presenter on the DVD talks about the results of the experiments.(i) Use Joe’s notes to predict the reactivity of iodine and astatine............................................................................................................................................ (2)© OCR 2012(ii) Joe writes this in his notes.I think that these results show that the top element in every groupin the Periodic Table is the most reactive.Do you agree with Joe? Explain your answer.................................................................................................................................................................................................................................................................................................................................................................................................................................. (2)[Total: 5]Turn over© OCR 20122 The table shows data about the physical properties of some elements.Element Appearance atroom temperature Melting pointin °CBoiling pointin °CDoes the elementconduct electricity?Chlorine green gas–101–34noBromine red-brown liquid–7 59noIodine dark grey solid114184noLithium shiny solid1801342yesSodium shiny solid97.8883yesPotassium shiny solid63.5759yesMendeleev put these elements into two groups in the Periodic T able.He used their similarities and differences to put lithium, sodium and potassium in one group.He put chlorine, bromine and iodine into another group.Discuss which data in the table support, and which data do not support, Mendeleev’s idea of organising these elements into the two groups.T he quality of written communication will be assessed in your answer. .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .. (6)[Total: 6]© OCR 2012Turn over© OCR 20123The diagram shows the arrangement of electrons in an atom of lithium and an atom of fluorine.lithiumfluorine(a) The electron arrangement of the lithium atom is 2.1.What is the electron arrangement of the fluorine atom?electron arrangement = (1)(b) Sodium has eleven electrons.Complete the diagram to show the arrangement of all of the electrons in a sodium atom.sodium[1](c) Another element is in the same group of the Periodic T able as fluorine. It has the electron arrangement 2.8.7. What is the name of this element?Use the Periodic T able to help you.name of element (1)(d) Give the names of the two particles found in the nucleus of an atom...................................................................and . (1)[Total: 4]4 Eve does an experiment with chlorine.She reacts chlorine with a metal. The reaction makes sodium chloride.(a)(i) Write a word equation for the reaction. (2)Before Eve does her experiment, she looks at the hazard warning sign for chlorine gas.(ii)Eve needs to use safety precautions when she uses chlorine in her experiment.Describe these safety precautions and explain why they are necessary............................................................................................................................................ (2)Sea salt contains both sodium chloride and potassium chloride.(b)Which of the following statements about potassium chloride are true and which are false?Put a tick (✓) in the correct box for each statement.true falsePotassium chloride gives a coloured flame in a flame test.Potassium chloride is a gas.Potassium chloride can be made by reacting potassium with bromine.Solid potassium chloride contains sodium ions and chloride ions.[2][Total: 6]© OCR 2012BLANK PAGEQuestion 5 begins on page 10PLEASE DO NOT WRITE ON THIS PAGETurn over © OCR 2012© OCR 20125Amy and Zak test samples of the same solution of a salt.AmyZakThey do tests to identify the positive metal ions and the negative ions in the solution. They use a fresh sample for each test.They both use dilute sodium hydroxide and dilute silver nitrate to test the solution.The boxes show the tests they use and their notes.Amy’s notesTests NotesTest 1Add a few drops of dilute sodium hydroxide.I think thesolution contains calcium ions.Test 2Acidify and add dilute silver nitrate.I think thesolution contains chloride ions.My conclusionThe solution contains calcium chloride .Zak’s notesTests NotesTest 1Add a few drops of dilute sodium hydroxide……then add more dilute sodium hydroxide.I think thesolution contains zinc ions.Test 2Acidify and add dilute silver nitrate.I think thesolution contains chloride ions.My conclusionThe solution contains zinc chloride .Amy and Zak both agree that the salt is a chloride but disagree about the metal ion in the salt. Use the data sheet on page 2 to help you work out what Amy and Zak saw when they did the tests. Explain how what they saw led them to their conclusions and who is more likely to be correct.T he quality of written communication will be assessed in your answer. .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .. (6)[Total: 6]6 Massicot is a mineral. It contains lead oxide, PbO.Lead metal is extracted from massicot. Lead is needed for roofing and car batteries.Jed and Kay live near a lead mine.The mass of lead that can be extracted from massicot can be worked out using relative atomic (a)masses.(i) Use the Periodic T able to find the relative atomic masses of lead and oxygen.relative atomic mass of lead = .....................relative atomic mass of oxygen = (1)(ii) Use your answers to work out the relative formula mass of lead oxide, PbO.relative formula mass of PbO = (1)The lead mine produces millions of tonnes of lead ore.(b)Jed and Kay are talking about the advantages and disadvantages of living near the lead mine.(i) Kay has just moved into the area. She has a young family.Give one advantage and one disadvantage to Kay of living near a lead mine....................................................................................................................................................................................................................................................................................... (2)(ii) Jed and Kay talk about lead processing at the mine.Suggest reasons that Kay could give for not closing the mine.................................................................................................................................................................................................................................................................................................................................................................................................................................. (2)[Total: 6]7 Aluminium is extracted from its ore by electrolysis.Aluminium ore contains aluminium oxide.(a) This is the word equation for the reaction.aluminium oxidealuminium + oxygenThe aluminium oxide is reduced. What does this mean?Put a tick (✓) in the box next to the correct answer.The aluminium oxide loses oxygen.The density of the aluminium oxide decreases.The aluminium oxide loses energy.The volume of the aluminium oxide decreases.[1](b) The electrolysis process uses molten aluminium oxide.The diagram shows the arrangement of particles in molten aluminium oxide.A l 3+O 2–O 2–O 2–O 2–O 2–O 2–A l 3+A l 3+A l 3+O 2–O 2–O 2–A l 3+A l 3+O 2–O 2–O 2–A l 3+A l 3+A l 3+O 2–O 2–O 2–A l 3+(i) Which two words can be used to describe molten aluminium oxide?Put rings around the two correct answers.covalent gas ionic liquid molecular solid[2](ii) During the electrolysis, negative ions move to the positive electrode and positive ions move to the negative electrode. A product is made at each electrode.Draw straight lines to connect each electrode with the correct product made.electrode product madealuminiumaluminium oxidepositive electrodewaternegative electrodehydrogenoxygen[2]Aluminium has many different uses.(c)The uses of aluminium depend on making the best use of its properties.Draw four straight lines to connect each use with the most important reason for that use.use most important reasonaircraft parts low density and can be mixed with other metals to make it strong power cables shiny appearance and surface can be coloured using dyes drinks and food cans surface is non-toxic and does not react with dilute acids jewellery very good electrical conductivity and can be shaped into wires[2][Total: 7]8Sue reacts copper carbonate with a dilute acid to make copper chloride.dilute acidcopper carbonate(a)Complete the word and symbol equations for the reaction by filling in the empty boxes.copper carbonate+copper chloride+carbon dioxide+CuCO 3+2HClCuC l 2+CO 2+[2](b) Which other chemicals react with the same dilute acid to form copper chloride?Put rings around the two correct answers.copper hydroxide copper nitrate copper oxide copper sulfate[1](c)Sue adds solid copper carbonate to the dilute acid until no more solid reacts.At the end of the experiment, the beaker contains copper chloride solution and some left-over solid copper carbonate.copper chloride solutionsolid copper carbonateHow can Sue make some pure, dry copper chloride crystals from the mixture in the beaker?The quality of written communication will be assessed in your answer............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ (6)(d)Sue measures the mass of crystals that she has made (her actual yield).Sue weighs an empty dish.She puts her crystals into the dish and weighs it again.These are her results.mass of empty dish = 200.0 gmass of dish and crystals = 204.5 g(i) What is the mass of the crystals (the actual yield)?mass = ..................................................... g [1] (ii) The theoretical yield for Sue’s experiment is5.0 g.Sue knows thatpercentage yield =actual yield theoretical yield×100%Use the actual yield from part (i) to calculate a percentage yield for Sue’s experiment.percentage yield = .................................................... % [1][Total: 11]9 Alex adds zinc to some dilute sulfuric acid.He measures the volume of hydrogen gas given off every 30 seconds. (a)Draw straight lines to connect each chemical to its correct formula.chemical formulahydrogen H2SO4zinc Znsulfuric acid H2[2](b)What is the name of the salt that forms in the reaction between zinc and sulfuric acid?Put a ring around the correct answer.zinc chloride zinc hydroxide zinc nitrate zinc oxide zinc sulfate[1](c)Alex thinks that the reaction is too slow.He does not want to change the mass of the zinc.Suggest two ways that Alex could make the reaction faster.................................................................................................................................................... (2)(d) Alex measures the volume of hydrogen in the gas syringe for 5 minutes.He plots his results on a graph.50010201234time in minutesvolume ofgas in cm 3(i) Which statement is the best description of what is happening at the start of the reaction?Put a tick (✓) in the box next to the correct answer.No reaction ishappening.The reaction rate is at its fastest.The reaction is slow but getting faster.The reaction is happening at a constant rate.[1](ii) Which statement is the best description of what is happening after 5 minutes?Put a tick (✓) in the box next to the correct answer.The reaction hasstopped.The reaction rate is at its fastest.The reaction is increasing in rate.Gas is being given off at a constant rate.[1](e)Alex measures the pH of the contents of the flask at the start and at the end of the reaction.The pH is very low at the start and increases during the reaction.Why does the pH change in this way?................................................................................................................................................... (2)[Total: 9]END OF QUESTION PAPERBLANK PAGEPLEASE DO NOT WRITE ON THIS PAGEPLEASE DO NOT WRITE ON THIS PAGECopyright InformationOCR is committed to seeking permission to reproduce all third-party content that it uses in its assessment materials. OCR has attempted to identify and contact all copyright holders whose work is used in this paper. T o avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced in the OCR Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download from our public website () after the live examination series.If OCR has unwittingly failed to correctly acknowledge or clear any third-party content in this assessment material, OCR will be happy to correct its mistake at the earliest possible opportunity.For queries or further information please contact the Copyright Team, First Floor, 9 Hills Road, Cambridge CB2 1GE.OCR is part of the Cambridge Assessment Group; Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.T h e P e r i o d i c T a b l e o f t h e E l e m e n t s* T h e l a n t h a n o i d s (a t o m i c n u m b e r s 58-71) a n d t h e a c t i n o i d s (a t o m i c n u m b e r s 90-103) h a v e b e e n o m i t t e d .T h e r e l a t i v e a t o m i c m a s s e s o f c o p p e r a n d c h l o r i n e h a v e n o t b e e n r o u n d e d t o t h e n e a r e s t w h o l e n u m b e r .12345670K e y1H h y d r o g e n 14H eh e l i u m27L il i t h i u m39B eb e r y l l i u m4r e l a t i v e a t o m i c m a s s a t o m i c s y m b o ln a m e a t o m i c (p r o t o n ) n u m b e r 11Bb o r o n512Cc a r b o n614N n i t r o g e n716O o x y g e n819Ff l u o r i n e 920N en e o n1023N as o d i u m1124M gm a g n e s i u m1227A la l u m i n i u m1328S i s i l i c o n1431P p h o s p h o r u s 1532S s u l f u r 1635.5C lc h l o r i n e 1740A ra r g o n1839Kp o t a s s i u m1940C ac a l c i u m2045S cs c a n d i u m2148T it i t a n i u m2251Vv a n a d i u m2352C rc h r o m i u m2455M n m a n g a n e s e 2556F ei r o n2659C o c o b a l t 2759N i n i c k e l 2863.5C uc o p p e r 2965Z n z i n c 3070G ag a l l i u m3173G eg e r m a n i u m 3275A sa r s e n i c 3379S es e l e n i u m 3480B rb r o m i n e 3584K rk r y p t o n3685R br u b i d i u m3788S rs t r o n t i u m3889Yy t t r i u m3991Z rz i r c o n i u m4093N bn i o b i u m4196M om o l y b d e n u m42[98]T c t e c h n e t i u m 43101R ur u t h e n i u m44103R hr h o d i u m 45106P dp a l l a d i u m46108A gs i l v e r 47112C dc ad m i u m48115I ni n d i u m 49119S nt i n50122S ba n t i m o n y51128T et e l l u r i u m52127Ii o d i n e53131X ex e n o n54133C sc a e s i u m55137B ab a r i u m56139L a *l a n t h a n u m57178H fh a f n i u m72181T at a n t a l u m73184Wt u n g s t e n74186R er h e n i u m75190O so s m i u m76192I ri r i d i u m 77195P tp l a t i n u m78197A ug o l d79201H gm e r c u r y 80204T l t h a l l i u m 81207P bl e a d82209B ib i s m u t h83[209]P op o l o n i u m 84[210]A ta s t a t i n e85[222]R nr a d o n86[223]F rf r a n c i u m 87[226]R ar a d i u m 88[227]A c *a c t i n i u m 89[261]R f r u t h e r f o r d i u m104[262]D bd u b n i u m105[266]S gs e a b o r g i u m106[264]B hb o h r i u m 107[277]H sh a s s i u m 108[268]M t m e i t n e r i u m109[271]D sd a r m s t a d t i u m110[272]R g r o e n t g e n i u m111E l e m e n t s w i t h a t o m i c n u m b e r s 112-116 h a v e b e e n r e p o r t e d b u t n o t f u l l y a u t h e n t i c a t e d。

九天国际教育GCSE真题Specimen QP - Paper 2 CIE Chemistry IGCSE

九天国际教育GCSE真题Specimen QP - Paper 2 CIE Chemistry IGCSE

The syllabus is accredited for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate.This document consists of 18 printed pages.© UCLES 2014[Turn over*0123456789*Cambridge International ExaminationsCambridge International General Certificate of Secondary EducationCHEMISTRY0620/02Paper 2 Multiple Choice (Extended) For Examination from 2016SPECIMEN PAPER45 minutesAdditional Materials: Multiple Choice Answer Sheet Soft clean eraserSoft pencil (type B or HB is recommended)READ THESE INSTRUCTIONS FIRSTWrite in soft pencil.Do not use staples, paper clips, glue or correction fluid.Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you.DO NOT WRITE IN ANY BARCODES.There are forty questions on this paper. Answer all questions. For each question there are four possible answers A , B , C and D .Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet.Read the instructions on the Answer Sheet very carefully.Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Periodic Table is printed on page 18. Electronic calculators may be used.1Amino acids are colourless and can be separated and identified by chromatography.paperWhat additional apparatus is required to identify the amino acids present in a mixture?A a locating agentB a rulerC a ruler and a locating agentD neither a ruler or a locating agent2The diagram shows the diffusion of hydrogen chloride and ammonia in a glass tube.The gases are given off by the solutions at each end of the tube.When hydrogen chloride and ammonia mix they produce a white solid, ammonium chloride.Which line shows where the white solid is formed?concentrated ammoniasolutionconcentrated hydrochloric acid© UCLES 2014 0620/02/SP/16© UCLES 2014 0620/02/SP/16[Turn over3 The diagram shows the structure of an atom.+key= proton = neutron = electronnWhich diagram shows the structure of an isotope of this atom?ABCD4 The table shows the structure of different atoms and ions.particleproton numbernucleon numbernumber of protonsnumber of neutronsnumber of electronsMg 12 24 12 W 12 Mg 2+ X 24 12 12 10 F 9 19 9 Y 9 F –9 19 9 10 ZWhat are the values of W, X, Y and Z?W X Y Z A 10 10 9 9 B 10 12 10 9 C 12 10 9 10 D 12 12 10 10© UCLES 20140620/02/SP/165 Iron is a metal. The structure of iron is described as a lattice of positive ions in a sea of electrons. Which of the following statements about iron are correct? 1 iron conducts electricity because the electrons are free to move 2 iron has a high melting point due to the strong covalent bonds 3 iron is an alloy 4 iron is malleable because the layers of atoms can slide over one anotherA 1 onlyB 1 and 3C 1 and 4D 2, 3 and 46 Which two elements react together to form an ionic compound?element electronic structure R T X Z2,4 2,8 2,8,1 2,8,7A R and TB T and XC X and ZD Z and R7 Ethene is an unsaturated hydrocarbon.HHHH C CWhich description of the bonding in ethene is correct?A All atoms in the molecule have a share of eight electrons.B Eachcarbon atom shares two of its electrons with hydrogen atoms and two of its electronswith a carbon atom. C Each carbon atom shares two of its electrons with hydrogen atoms and one of its electronswith a carbon atom. D The two carbon atoms share a total of six electrons with other atoms.8 What is the relative molecular mass, M r , of butanol? A 15 B 37 C 74 D 148© UCLES 2014 0620/02/SP/16[Turn over9 The chemical formulae of two substances, W and X, are given.W NaA l Si 3O 8X CaA l 2Si 2O 8 Which statements are correct? 1 W and X contain the same amount of oxygen. 2 W contains three times as much silicon as X. 3 X contains twice as much aluminium as W. A 1 and 2 B 1 and 3 C 2 and 3 D 1, 2 and 310 What is the concentration of a solution containing 1.0 g of sodium hydroxide in 250 cm 3 ofsolution?A 0.025 mol / dm 3B 0.10 mol / dm 3C 0.25 mol / dm 3D 1.0 mol / dm 311 Four students prepared hydrated copper(II ) sulfate by adding an excess of dilute sulfuric acid tocopper(II ) oxide. Each student used a different mass of copper(II ) oxide.dilute sulfuric acidCuOCuSO 4.5H 2O M r = 80 M r = 250After the copper(II ) sulfate had crystallised the students dried and weighed the crystals.Which student produced the highest percentage yield of hydrated copper(II ) sulfate?mass of copper(II ) oxide used / gmass of crystals produced / gA 4.0 11.5B 8.0 23.5C 12.0 35.0D 16.0 46.5© UCLES 2014 0620/02/SP/16cm 3 of ethyne, C 2H 2, are reacted with 500cm 3 of oxygen. The equation for the reaction is2C 2H 2(g) + 5O 2(g) → 4CO 2(g) + 2H 2O(l)What is the total volume of gas remaining at the end of the reaction? (all volumes are measured at room temperature and pressure)A 400 cm 3B 450 cm 3C 490 cm 3D 520 cm 313 Different metals were tested using the apparatus shown.Which pair of metals would produce the largest voltage? A copper and silver B magnesium and silver C magnesium and zinc D zinc and copper14 Three electrolysis cells are set up. Each cell has inert electrodes. The electrolytes are listed below. cell 1 aqueous sodium chloride cell 2 dilute sulfuric acidcell 3molten lead(II ) bromideIn which of these cells is a gas formed at both electrodes? A 1 and 2B 1 and 3C 2 onlyD 3 only© UCLES 2014 0620/02/SP/16[Turn over15 The statements refer to the electrolysis of concentrated copper(II ) chloride solution. 1 Electrons are transferred from the cathode to the copper(II ) ions. 2 Electrons move around the circuit from the cathode to the anode. 3 Chloride ions are attracted to the anode. 4 Hydroxide ions transfer electrons to the cathode. Which statements about the electrolysis of concentrated copper(II ) chloride are correct?A 1 and 3B 1 and 4C 2 and 3D 2 and 416 Water can be used to produce hydrogen gas.2H 2O → 2H 2 + O 2Which row describes bond breaking in the reactant?A B C Dendothermic endothermic exothermic exothermicheat absorbed heat released heat absorbed heat released17 Dinitrogen tetroxide, N 2O 4, breaks down into nitrogen dioxide, NO 2.N 2O 4(g) ⇌ 2NO 2(g)The reaction is reversible and endothermic. Which conditions will give the largest yield of nitrogen dioxide, NO 2?temperaturepressureA B C D high high low lowhigh low high low© UCLES 2014 0620/02/SP/16For which two reactions would this apparatus be suitable?reaction 1 AgNO 3(aq) + HC l (aq) → AgC l (s) + HNO 3(aq)reaction 2 2H 2O 2(aq) → 2H 2O(I) + O 2(g) reaction 3 MgO(s) + 2HC l (aq) → MgC l 2(aq) + H 2O(I)reaction 4 ZnCO 3(s) + 2HC l (aq) → ZnC l 2(aq) + CO 2(g) + H 2O(I)A 1 and 2B 1 and 3C 2 and 4D 3 and 419 A student investigates the rate of reaction between magnesium and excess sulfuric acid. The volume of hydrogen given off in the reaction is measured over time. The graph shows the results of two experiments, R and S.volume of hydrogen given offtimeWhich change in conditions would cause the difference between R and S? A A catalyst is added in S.B The acid is more concentrated in R than in S.C The magnesium is less finely powdered in R than in S.D The temperature in R is lower than in S.20 Which of these reactions shows only reduction?A Cu2+ + 2e– CuB Fe2O3 + 3CO 2Fe + 3CO2C HC l + NaOH NaC l + H2OD Mg + ZnSO4 Zn + MgSO421The red colour in some pottery glazes may be formed as a result of the reactions shown.CuCO3CuO + CO2CuO + SnO Cu + SnO2These equations show that ......1...... is oxidised and ......2...... is reduced.Which substances correctly complete gaps 1 and 2 in the above sentence?1 2A B C DCO2CuCO3CuOSnOSnO2CuOSnOCuO22Acids are compounds which donate protons (hydrogen ions).NH3(aq) + H2O(l) → NH4+(aq) + OH–(aq)Which compound in this equation is behaving as an acid?A ammoniaB ammonium hydroxideC none of themD water© UCLES 2014 0620/02/SP/16 [Turn over© UCLES 2014 0620/02/SP/1623 The reactions of four different oxides W, X, Y and Z are shown. W reacts with hydrochloric acid but not sodium hydroxide. X reacts with both hydrochloric acid and sodium hydroxide. Y does not react with either hydrochloric acid or sodium hydroxide. Z reacts with sodium hydroxide but not hydrochloric acid. Which row shows the correct types of oxide?acidic basic amphoteric neutral A B C DW X Z ZZ Y X WX W Y XY Z W Y24 A solution contains barium ions and silver ions and one type of anion. What could the anion be? A chloride only B nitrate onlyC sulfate onlyD chloride or nitrate or sulfate25A mixture containing two anions was tested and the results are shown below.test resultdilute nitric acid addedeffervescence of a gas whichturned limewater milkydilute nitric acid added, followed by aqueous silver nitrateyellow precipitate formed Which anions were present? A carbonate and chloride B carbonate and iodide C sulfate and chloride D sulfate and iodide26 Part of the Periodic Table is shown. The letters are not the chemical symbols of the elements.W ZYXWhich statement about the elements is not correct. A W has two electrons in the outermost shell. B Y is in Group IV of the Periodic Table.C X and Y bond covalently to form a molecule XY 4.D Z has more metallic character than Y.27 Astatine is an element in Group VII of the Periodic Table. It has only ever been produced in verysmall amounts. What are the likely properties of astatine?colour statereaction with aqueouspotassium iodideA B C D black dark brown green yellowsolid gas solid liquidno reaction brown colour no reaction brown colourmetal dilute hydrochloric acidwaterP Q Rhydrogen producedno reactionhydrogen producedhydrogen producedno reactionno reactionWhat is the order of reactivity of the metals?most reactiveleast reactiveA B C DP P R RR Q Q PQ R P Q29 Compound X is heated with carbon using the apparatus shown.carbonA brown solid is formed in the reaction tube and the limewater turns cloudy. What is compound X? A calcium oxideB copper(II ) oxideC magnesium oxideD sodium oxide30 Zinc is extracted from zinc blende.Zinc blende is an ore of zinc and consists mainly of zincsulfide.One of the steps in the process involves zinc sulfide reacting with oxygen from the air.What is the equation for this reaction?A 2ZnS + 3O2→ 2ZnO + 2SO2B 2ZnS + O2→ 2Zn + SO2C 2ZnS + O2→ 2ZnO + SD ZnS + 2O2→ ZnSO431The diagram shows the carbon cycle.Which process is shown by the arrow marked X?A combustionB photosynthesisC respirationD transpiration32 A catalytic converter removes harmful gases from motor car exhausts.doesnot take place in a catalytic converter?WhichreactionA 2CO + O2→ 2CO2B N2 + 2CO2→ 2NO + 2COC 2NO2→ N2 + 2O2D 2NO2 + 4CO → N2 + 4CO233The diagram shows some reactions of substance Y.heat with an Arraydilute acidWhich type of substance is Y?A an alcoholB a baseC a catalystD a metal34Which row shows the conditions for the manufacture of sulfuric acid?pressure/atm temperature/°C catalystA B C D22200200450250450250vanadium(V) oxideironironvanadium(V) oxide35Air containing an acidic impurity was neutralised by passing it through a column containing substance X.acidic airneutralised airWhat is substance X?A calcium oxideB sandC sodium chlorideD concentrated sulfuric acid36 In an oil refinery, petroleum is separated into useful fractions. The diagram shows some of these fractions.refinery gases gasoline Xdiesel oil YZWhat are fractions X, Y and Z?X Y ZA B C Dfuel oil fuel oil paraffin (kerosene) paraffin (kerosene)bitumen paraffin (kerosene)bitumen fuel oilparaffin (kerosene)bitumen fuel oil bitumen37 Which reaction does not take place in the dark? A CH 4 + 2O 2 → CO 2 + 2H 2O B CH 4 + C l 2 → CH 3C l + HC l C C 2H 4 + H 2O → C 2H 5OH D C 2H 4 + H 2 → C 2H 638Ethane and ethene are both hydrocarbons.Ethane reacts with chlorine and ethene reacts with bromine.Which row describes the type of reaction that ethane and ethene undergo?ethane ethene A B C Daddition addition substitution substitutionaddition substitution substitution addition39Esters are made by reacting an alcohol with a carboxylic acid. Which acid and alcohol react together to form the following ester?3CH 3CH 2CA propanoic acid and ethanolB propanoic acid and methanolC ethanoic acid and ethanolD ethanoic acid and methanol40 Which structure represents a polymer?ABCDPe rmission to re produce ite ms whe re third-party owne d mate rial prote cte d by copyright is include d has be e n sought and cle are d whe re possible. Eve ry reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity.Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.。

九天国际教育GCSE真题June 2012 (v3) QP - Paper 5 CIE Chemistry IGCSE

九天国际教育GCSE真题June 2012 (v3) QP - Paper 5 CIE Chemistry IGCSE

READ THESE INSTRUCTIONS FIRSTWrite your Centre number, candidate number and name on all the work you hand in.Write in dark blue or black pen.You may use a pencil for any diagrams, graphs or rough working.Do not use staples, paper clips, highlighters, glue or correction fl uid.DO NOT WRITE IN ANY BARCODES.Answer all questions.Practical notes are provided on page 8.At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question.CHEMISTRY0620/53Paper 5 Practical TestMay/June 20121 hour 15 minutesCandidates answer on the Question Paper.Additional Materials:As listed in the Con fidential InstructionsUNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certi fi cate of Secondary EducationThis document consists of 7 printed pages and 1blank page.[Turn overIB12 06_0620_53/FP © UCLES 2012*7620311346*For Examiner’s Use TotalFor Examiner’sUse1Y ou are going to investigate what happens when two different solids, C and D , dissolve in water.R ead all the instructions below carefully before starting the experiments. I nstructions Y ou are going to carry out two experiments. (a) E xperiment 1P lace the polystyrene cup in the 250 cm 3 beaker for support.U se a measuring cylinder to pour 25 cm 3 of distilled water into the polystyrene cup.Measure the temperature of the water and record it in the table below.A dd all of solid C to the water, start the timer and stir the mixture with the thermometer.M easure the temperature of the solution every 30 seconds for three minutes. Record your results in the table.time / s306090120150180temperature of solution / °C[2](b) E xperiment 2E mpty the polystyrene cup and rinse it with water.U se a measuring cylinder to pour 25 cm 3 of distilled water into the polystyrene cup.Measure the temperature of the water and record it in the table below.A dd all of solid D to the water, start the timer and stir the mixture with the thermometer.M easure the temperature of the solution every 30 seconds for three minutes. Record your results in the table.time / s306090120150180temperature of solution / °C[2]ForExaminer’sUse(c) P lot the results for Experiments 1 and 2 on the grid and draw two smooth line graphs.C learly label your graphs.306090120150180time / st e m p e r a t u r e o f s o l u t i o n / °C[6](d) (i) F rom your graph , deduce the temperature of the solution in Experiment 1 after45 seconds. S how clearly on the graph how you worked out your answer........................... °C [2] (ii) F rom your graph , deduce how long it takes for the initial temperature of the solution in Experiment 2 to change by 1 °C.S how clearly on the graph how you worked out your answer........................... s[2]For (e)W hat type of change occurs when substance D dissolves in water?Examiner’sUse (1)(f)S uggest and explain the effect on the results if Experiment 1 was repeated using 50cm3of distilled water............................................................................................................................................ (2)(g)P redict the temperature of the solution in Experiment 2 after 1 hour. Explain your answer............................................................................................................................................ (2)(h)W hen carrying out the experiments, what would be the advantage of taking thetemperature readings every 15 seconds?........................................................................................................................................... (2)[Total: 21]ForExaminer’sUse2 Y ou are provided with solid E and liquid F . C arry out the following tests on E and F , recording all of your observations in the table.C onclusions must not be written in the table.testsobservationstests on solid E(a) D escribe the appearance of solid E . (1)(b) P lace half of solid E in a test-tube. Heat the test-tube gently.T est any gas given off....................................................................... . (3)(c) (i) A dd half of the remaining solid E to about 5 cm 3 of dilute sulfuric acid in atest-tube.A llow the mixture to settle. Decant offthe liquid into a test-tube.D ivide the solution into two equal portions in test-tubes. Add 1cm depth of distilled water to each test-tube and shake. Carry out the following tests.(ii) A dd several drops of aqueous sodiumhydroxide to the fi rst portion of the solution and shake the test-tube. N ow add excess sodium hydroxide tothe test-tube. (iii) A dd several drops of aqueousammonia to the second portion of the solution and shake the test-tube.N ow add excess aqueous ammonia to the test-tube....................................................................................................................................... [2] ...................................................................................................................................... [2] ...................................................................... ...................................................................... (3)ForExaminer’sUsetestsobservationstests on liquid F(d) D escribe the appearance and smell ofliquid F . appearance (1)smell (1)(e) U se pH indicator paper to measure the pHof liquid F . pH (1)(f) A dd about 3 cm 3 of liquid F to the rest of solid E in a test-tube. Leave to stand for fi ve minutes. ...................................................................... . (2)(g) I dentify solid E ...................................................................................................................................... [2] (h) D raw one conclusion about liquid F . (1)[Total: 19]BLANK PAGEPermission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included the publisher will be pleased to make amends at the earliest possible opportunity.University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.NOTES FOR USE IN QUALITATIVE ANALYSISTest for anions aniontesttest resultcarbonate (CO 32–)add dilute acideffervescence, carbon dioxide produced chloride (C l –)[in solution]acidify with dilute nitric acid, then add aqueous silver nitrate white ppt.iodide (I –)[in solution]acidify with dilute nitric acid, then add aqueous silver nitrate yellow ppt.nitrate (NO 3–)[in solution]add aqueous sodium hydroxide then aluminium foil; warm carefully ammonia produced sulfate (SO 42–)[in solution]acidify with dilute nitric acid, then aqueous barium nitratewhite ppt.Test for aqueous cations cationeffect of aqueous sodium hydroxide effect of aqueous ammonia aluminium (A l 3+)white ppt., soluble in excess giving a colourless solutionwhite ppt., insoluble in excess ammonium (NH 4+)ammonia produced on warming –calcium (Ca 2+)white ppt., insoluble in excess no ppt., or very slight white ppt.copper (Cu 2+)light blue ppt., insoluble in excess light blue ppt., soluble in excess giving a dark blue solution iron(II ) (Fe 2+)green ppt., insoluble in excess green ppt., insoluble in excess iron(III ) (Fe 3+)red-brown ppt., insoluble in excess red-brown ppt., insoluble in excess zinc (Zn 2+)white ppt., soluble in excess giving a colourless solutionwhite ppt., soluble in excess giving a colourless solutionTest for gases gastest and test resultsammonia (NH 3)turns damp red litmus paper blue carbon dioxide (CO 2)turns limewater milky chlorine (C l 2)bleaches damp litmus paper hydrogen (H 2)‘pops’ with a lighted splint oxygen (O 2)relights a glowing splint。

九天国际教育GCSE真题June 2011 (v3) QP - Paper 1 CIE Chemistry IGCSE

九天国际教育GCSE真题June 2011 (v3) QP - Paper 1 CIE Chemistry IGCSE

This document consists of 16 printed pages.IB11 06_0620_13/FP© UCLES 2011[Turn over*8339598569*UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary EducationCHEMISTRY 0620/13Paper 1 Multiple Choice May/June 201145 MinutesAdditional Materials: Multiple Choice Answer Sheet Soft clean eraserSoft pencil (type B or HB is recommended)READ THESE INSTRUCTIONS FIRSTWrite in soft pencil.Do not use staples, paper clips, highlighters, glue or correction fluid.Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you.There areforty questions on this paper. Answer all questions. For each question there are four possibl e answers A , B , C and D .Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet.Read the instructions on the Answer Sheet very carefully.Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Periodic Table is printed on page 16. You may use a calculator.© UCLES 20110620/13/M/J/111 The diagrams show the arrangement of particles in three different physical states of substance X.state 1state 2state 3Which statement about the physical states of substance X is correct? A Particles in state 1 vibrate about fixed positions. B State 1 changes to state 2 by diffusion.C State 2 changes directly to state 3 by condensation.D The substance in stage 3 has a fixed volume.2 In the diagrams, circles of different sizes represent atoms of different elements. Which diagram represents hydrogen chloride gas?BACD3 The diagram shows part of the Periodic Table.ACBDWhich element is correctly matched with its electronic structure?electronicstructure A 2,8,1 B 2,4 C 2,8,2 D 2,84An aqueous solution is coloured.Which method of separation would show that the solution contains ions of different colours?A chromatographyB crystallisationC distillationD filtration5 The table gives the solubility of four substances in ethanol and in water.A mixture containing all four substances is added to ethanol, stirred and filtered.The solid residue is added to water, stirred and filtered.The filtrate is evaporated to dryness, leaving a white solid.Which is the white solid?solubility inethanol waterA insoluble insolubleB insoluble solubleC soluble insolubleD soluble soluble6Which two elements react together to form an ionic compound?structureelement electronicW 2,4X 2,8Y 2,8,1Z 2,8,7A W and XB X and YC Y and ZD Z and W© UCLES 2011 0620/13/M/J/11 [Turn over7Electricity is passed through concentrated aqueous sodium chloride, as shown.What is the test for the gas formed at the positive electrode?A bleaches damp litmus paperB ‘pops’ with a lighted splintC relights a glowing splintD turns damp red litmus paper blue8Electricity from a power station passes through overhead cables to a substation and then to a school where it is used to electrolyse concentrated hydrochloric acid using inert electrodes.Which substances are used for the overhead cables and for the electrodes?overheadcables electrodesA aluminium copperB aluminium platinumC copper platinumD platinum aluminium9The nucleon number and proton number of the lithium atom are shown by the symbol Li73.What is the correct symbol for the lithium ion in lithium chloride?A 62Li− B 63Li+ C 73Li+ D 73Li−© UCLES 2011 0620/13/M/J/1110Three processes are listed.burning methane in airradioactive decay of 235Ureacting hydrogen with oxygen.Which statements about these processes are correct?1 Hydrogen and methane are being used as fuels.2 All the processes involve oxidation.3 All the processes are used to produce energy.A 1 and 2 onlyB 1 and 3 onlyC 2 and 3 only D1, 2 and 311 Which statement about the electrolysis of molten lead(II) bromide is correct?A A colourless gas is seen at the cathode.B A grey metal is seen at the anode.C A red/brown gas is seen at the anode.D A red/brown metal is seen at the cathode.12What is the relative molecular mass (M r) of HNO3?A 5B 31C 32D 6313The equation for the effect of heat on hydrated sodium carbonate is as shown.Na2CO3.10H2O(s) Na2CO3(s) + 10H2O(g)Statements made by four students about the reaction are given.P Anhydrous sodium carbonate is formed.Q Steam is formed.R There is a colour change from blue to white.S The reaction is reversible.Which students’ statements are correct?A P, Q and R onlyB P, Q and S onlyC Q, R and S onlyD P, Q, R and S© UCLES 2011 0620/13/M/J/11 [Turn over© UCLES 2011 0620/13/M/J/11For which two reactions would the apparatus be suitable?reaction 1 AgNO 3(aq) + HC l (aq) → AgC l (s) + HNO 3(aq) reaction 2 2H 2O 2(aq) → 2H 2O(l) + O 2(g)reaction 3 MgO(s) + 2HC l (aq) → MgC l 2(aq) + H 2O(l)reaction 4ZnCO 3(s) + 2HC l (aq) → ZnC l2(aq) + CO 2(g) + H 2O(l)A 1 and 2B 1 and 3C 2 and 4D 3 and 415 A student investigates the rate of reaction between magnesium and excess sulfuric acid.The volume of hydrogen given off in the reaction is measured over time.The graph shows the results of two experiments, R and S.volume of hydrogen given offtimeWhich change in conditions would cause the difference between R and S?A A catalyst is added in S.B The acid is more concentrated in R than in S.C The magnesium is less finely powdered in R than in S.D The temperature in R is lower than in S.© UCLES 2011 0620/13/M/J/11[Turn over16 Butane, ethanol and hydrogen are fuels.Which substances produce both carbon dioxide and water when used as a fuel?butane ethanolhydrogen A B C D17 X is a monatomic gas.gas XWhich statement about X is correct? A X burns in air. B X is coloured. C X is unreactive.D X will displace iodine from potassium iodide.18 The equation shows the reaction between a halogen and aqueous bromide ions.X 2 +2Br –(aq) → 2X –(aq) + Br 2…1… …2……3…Which words correctly complete gaps 1, 2 and 3?1 2 3 A chlorine brown colourless B chlorine colourless brown C iodine brown colourless D iodine colourless brown19Carbon dioxide is an acidic oxide that reacts with aqueous calcium hydroxide.Which type of reaction takes place?A decompositionB fermentationC neutralisationD oxidation20 A solution contains barium ions and silver ions.What could the anion be?A chloride onlyB nitrate onlyC sulfate onlyD chloride or nitrate or sulfate21 A mixture containing two anions was tested and the results are shown below.test result dilute nitric acid added effervescence of a gas whichturned limewater milkydilute nitric acid added, followedyellow precipitate formedby aqueous silver nitrateWhich anions were present?A carbonate and chlorideB carbonate and iodideC sulfate and chlorideD sulfate and iodide22 Which is not a typical property of an acid?A They react with alkalis producing water.B They react with all metals producing hydrogen.C They react with carbonates producing carbon dioxide.D They turn litmus paper red.© UCLES 2011 0620/13/M/J/11© UCLES 2011 0620/13/M/J/11[Turn over23 The diagram shows a section of the Periodic Table.WVXZYI II III IV V VI VII 0Which elements will conduct electricity at room temperature? A V, W and XB V, Y and WC W, X and ZD Y and Z24 Water from a reservoir flows to the water works where purification processes 1 takes placefollowed by process 2.What are purification processes 1 and 2?purification process 1purification process 2A chlorination filtrationB filtration chlorinationC fractional distillationfiltrationDfiltration fractional distillation25 The properties of a metal are important in deciding its use.Which row lists a property that is not correct for the use given?use of the metalmetal property neededA aluminium in aircraft wings low densityB aluminium in food containers resists corrosionC mild steel in car bodies high densityD stainless steel in cutlerydoes not rust© UCLES 2011 0620/13/M/J/1126 Brass is an alloy of copper and zinc.Which statement is correct?A Brass can be represented by a chemical formula.B Brass is formed by a chemical reaction between copper and zinc.C The alloy will dissolve completely in dilute hydrochloric acid.D The zinc in the alloy will dissolve in dilute hydrochloric acid.27 Which statement is correct for the element of proton number 19?A It is a gas that dissolves in water.B It is a hard metal that is not very reactive with water.C It is a non-metal that burns quickly in air.D It is a soft metal that is highly reactive with water.28 Which row describes the conditions used to make steel from the iron produced by a blastfurnace?calcium oxide(lime)oxygen heat A B C D29The table shows the results of adding three metals, P, Q and R, to dilute hydrochloric acid and to water.metal dilute hydrochloric acid waterP hydrogen produced hydrogen producedQ no reaction no reactionR hydrogen produced no reactionWhat is the order of reactivity of the metals?mostreactive least reactiveAP R QBP Q RC R QPD RP Q30Which substance is a metal?electrical conductivity(solid) electrical conductivity(molten)A high highB high lowC low highD low low31Greenhouse gases may contribute to climate change.Two of these gases are emitted into the atmosphere as a result of processes within animals.Gas ……1…… is produced by process ……3…… .Gas ……2…… is produced by process ……4…… .Which words correctly complete gaps 1, 2, 3 and 4?1 2 3 4A CO C2H6 digestion respirationB CO C2H6 respiration digestionC CO2 CH4 digestion respirationD CO2 CH4 respiration digestion32The diagram shows the composition by volume of air.XWhat is X?A argonB carbon dioxideC nitrogenD oxygen33The table gives the composition of the atmosphere of four newly discovered planets.planet composition of atmosphereW argon, carbon dioxide and oxygenX argon, nitrogen and oxygenY argon, carbon dioxide and methaneZ methane, nitrogen and oxygen On which planets is the greenhouse effect likely to occur?A W onlyB W, X and ZC W and Y onlyD W, Y and Z34Which two substances, when reacted together, would form a salt that contains two of the essential elements provided by fertilisers?A potassium hydroxide and nitric acidB potassium hydroxide and sulfuric acidC sodium hydroxide and nitric acidD sodium hydroxide and sulfuric acid35Statement 1: Alloying iron with other materials to form stainless steel prevents iron from rusting by excluding oxygen.Statement 2: Painting, oiling and electroplating are all methods of preventing iron from rusting.Which is correct?A Both statements are correct and statement 2 explains statement 1.B Both statements are correct but statement 2 does not explain statement 1.C Statement 1 is correct but statement 2 is incorrect.D Statement 2 is correct but statement 1 is incorrect.36What is the main constituent of natural gas?A carbon dioxideB ethaneC hydrogenD methane37 What is not essential for the formation of ethanol by fermentation?A lightB sugarC yeastD water38Which industrial process is shown in the diagram?crudeoil vapourA crackingB fermentationC fractional distillationD polymerisation39The diagram shows the structures of three compounds.OCH HOHCH HCHHHHOC CHHCHWhy do these three compounds belong to the same homologous series?A They all contain carbon, hydrogen and oxygen.B They all contain the same functional group.C They are all carbon based molecules.D They are all flammable liquids.40Compounds containing five carbon atoms in a molecule may have names beginning with ‘pent…’.What is the name of the compound shown?key= carbon= oxygen= hydrogenA pentaneB pentanoic acidC pentanolD pentene16Per mission to r epr oduce items wher e thir d-par ty owned mater ial pr otected by copyr ight is included has been sought and clear ed wher e possible. Ever y reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity.University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.G r o u p140C eC e r i u m 58141P rP r a s e o d y m i u m 59144N d N e o d ym i u m 60P mP r o m e t h i u m61150S mS a m a r i u m62152E uE u r o p i u m63157G dG a d o l i n i u m64159T bT e r b i u m65162D yD y s p r o s i u m66165H oH o l m i u m67167E rE r b i u m68169T mT h u l i u m69173Y bY t t e r b i u m70175L uL u t e t i u m71232T hT h o r i u m 90P aP r o t a c t i n i u m 91238UU r a n i u m92N pN e p t u n i u m93P uP l u t o n i u m94A mA m e r i c i u m95C mC u r i u m96B kB e r k e l i u m97C fC a l i f o r n i u m98E sE i n s t e i n i u m99F mF e r m i u m100M dM e n d e l e v i u m101N oN o b e l i u m102L rL a w r e n c i u m1031HH y d r o g e n17L iL i t h i u m 323N aS o d i u m 1124M gM a g n e s i u m1240C aC a l c i u m 2045S c S c a n d i u m 2148T i T i t a n i u m2251V V a n a d i u m 2352C r C h r o m i u m 2455M n M a n g a n e s e 2556F e I r o n 2659C o C o b a l t 2759N i N i c k e l 2864C u C o p p e r 2965Z n Z i n c3070G aG a l l i u m3127A l A l u m i n i u m1311B B o r o n 512C C a r b o n614NN i t r o g e n716OO x y g e n819FF l u o r i n e928S iS i l i c o n1431PP h o s p h o r u s1532SS u l f u r1635.5C lC h l o r i n e1740A rA r g o n1820N eN e o n104H eH e l i u m273G eG e r m a n i u m3275A sA r s e n i c3379S eS e l e n i u m3480B rB r o m i n e3584K rK r y p t o n3639KP o t a s s i u m 1988S rS t r o n t i u m 3889Y Y t t r i u m 3991Z r Z i r c o n i u m4093N b N i o b i u m 4196M o M o l y b d e n u m 42T c T e c h n e t i u m 43101R u R u t h e n i u m 44103R h R h o d i u m 45106P d P a l l a d i u m 46108A g S i l v e r47112C dC a d m i u m48115I nI n d i u m49119S nT i n50122S bA n t i m o n y51128T eT e l l u r i u m52127II o d i n e53131X eX e n o n54137B aB a r i u m 56139L a L a n t h a n u m 57*178H fH a f n i u m72181T a T a n t a l u m 73184W T u n g s t e n 74186R e R h e n i u m 75190O s O s m i u m 76192I rI r i d i u m 77195P t P l a t i n u m78197A uG o l d79201H gM e r c u r y80204T lT h a l l i u m81207P bL e a d82209B iB i s m u t h83P oP o l o n i u m84A tA s t a t i n e85R nR a d o n86F rF r a n c i u m 87227A cA c t i n i u m899B eB e r y l l i u m4II I I I II V V V I V I I 085R bR u b i d i u m 37133C sC a e s i u m 55226R a R a d i u m 88T h e v o l u m e o f o n e m o l e o f a n y g a s i s 24d m 3a t r o o m t e m p e r a t u r e a n d p r e s s u r e (r .t .p .).a Xb a = r e l a t i v e a t o m ic m a s sX = a t o m i c s y m b o lb = p r o t o n (a t o m ic ) n u m b e rK e y *58-71 L a n t h a n o i d s e r i e s 90-103 A c t i n o i d s e r i e s D A T A S H E E T T h e P e r i o d i c T a b l e o f t h e E l e m e n t sPMT。

九天国际教育GCSE真题June 2013 (v3) QP - Paper 2 CIE Chemistry IGCSE

九天国际教育GCSE真题June 2013 (v3) QP - Paper 2 CIE Chemistry IGCSE

READ THESE INSTRUCTIONS FIRSTWrite your Centre number, candidate number and name in the spaces at the top of this page.Write in dark blue or black pen.You may need to use a pencil for any diagrams, graphs or rough working.Do not use staples, paper clips, highlighters, glue or correction fl uid.DO NOT WRITE IN ANY BARCODES.Answer all questions.Electronic calculators may be used.A copy of the Periodic Table is printed on page 16.You may lose marks if you do not show your working or if you do not use appropriate units.At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question.CHEMISTRY0620/23Paper 2May/June 20131 hour 15 minutesCandidates answer on the Question Paper.No Additional Materials are required.UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certifi cate of Secondary EducationThis document consists of 14 printed pages and 2blank pages.[Turn overIB13 06_0620_23/3RP © UCLES 2013*4714033593*0620/23/M/J/13© UCLES 2013For Examiner’sUse1T he structures of fi ve atoms, A , B , C , D and E , are shown below.ABCDE(a) A nswer the following questions about these structures. Each structure can be used once,more than once or not at all.(i) W hich two structures are hydrogen atoms? ............. and ............. (ii) W hich structure represents an atom of a metal?.............(iii) W hich structure has a proton (atomic) number of 3? ............. (iv) W hich structure has two neutrons in its nucleus? .............[5](b) T he structure of carbon-12 can be written C 612.W rite the structure of atom D in a similar way.[1](c) C omplete the following sentences about isotopes using words from the list below.atoms energy iron moleculesneutrons protons radioactive stableI sotopes are atoms of the same element with the same number of ....................... and different numbers of ....................... . Some isotopes such as uranium-235 are ........................ . Uranium-235 can be used as a source of ....................... .[4][Total: 10]For2The table shows some physical properties of the Group VII elements.Examiner’sUse Array(a)U se the information in the table to explain why(i)c hlorine is a gas at room temperature, ...................................................................... (1)(ii)b romine is a liquid at room temperature. ................................................................... (1)(b)D escribe the trend in atomic radius going down the group from chlorine to iodine. (1)(c)S uggest a value for the atomic radius of fl uorine. (1)(d)D escribe the colour of chlorine. (1)(e)A chlorine atom has 17 electrons.Complete the following structure to show how the electrons are arranged.[2](f)C hlorine reacts with potassium bromide to form potassium chloride and bromine.(i)C omplete the symbol equation for this reaction.+ .......KBr → 2KC l + . (2)C l2(ii)E xplain why iodine does not react with potassium bromide. (1)[Total: 10]© UCLES 2013[Turn over0620/23/M/J/13ForExaminer’sUse3A luminium and gallium are in Group III of the Periodic Table.(a)T he heat from your hand is suffi cient to melt gallium.D escribe the change in state from solid to liquid in terms of the kinetic particle theory.I n your answer include●t he difference in arrangement and closeness of the particles in a solid and a liquid,●t he difference in the motion of the particles in a solid and a liquid............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. (5)(b)G allium is a metal. Describe three physical properties of gallium which are typical ofmost metals.1........................................................................................................................................2........................................................................................................................................3. (3)(c)W hen it is a gas, gallium(III) chloride has the structure shown below.Ga C lC l C lC lGaC lC lW rite the molecular formula for gallium(III) chloride. (1)0620/23/M/J/13© UCLES 2013ForExaminer’sUse (d)A luminium is used to make high voltage electricity cables.T he table shows some properties of four metals which could be used for overhead powercables.metal relativestrengthdensity ing/cm3relative electricalconductivityprice$ per tonnealuminium9 2.700.42120copper308.920.79600tungsten10019.350.2450steel507.860.1700(i)S uggest why aluminium, rather than tungsten, is used in overhead power cables? (1)(ii)S uggest why steel, rather than copper, is used as a core for overhead power cables. (1)(iii)G ive two reasons why aluminium is used for overhead power cables rather than copper.1.................................................................................................................................2. (2)(e)S tate one use of aluminium other than as an electrical conductor. (1)[Total: 14]0620/23/M/J/13© UCLES 2013[Turn overFor4I mpure water needs to be treated if it is to be used in the home.Examiner’sUse(a) (i)E xplain why fi ltration and chlorination are used in the water treatment process......................................................................................................................................................................................................................................................................... (2)(ii)S tate one use of water in the home. (1)(b)D escribe a chemical test for water.....................................................................................................................................test (2)result(c) (i)C omplete the diagram below to show the electron arrangement in a water molecule.[1](ii)I s the bonding in water covalent or ionic?G ive a reason for your answer. (1)(d)P ure water is neutral. Which one of these pH values is neutral?P ut a ring around the correct answer.pH 0 pH 6 pH 7 pH 9 pH 13[1](e)W ater reacts with sodium. The products are sodium hydroxide and hydrogen.W rite a word equation for this reaction.[1][Total: 9]© UCLES 20130620/23/M/J/130620/23/M/J/13© UCLES 2013[Turn overForExaminer’sUse5 E nergy is given out when fuels burn.(a) S tate the name given to a chemical reaction which releases energy...................................................................................................................................... [1] (b) H ydrogen can be used as a fuel.C omplete the symbol equation for the burning of hydrogen in oxygen........H 2 + ....... → 2H 2O [2] (c) G asoline is a mixture of hydrocarbons containing between 5 and 10 carbon atoms.F our of these hydrocarbons are shown below.C HHH C HH C HH AC HH C HH HC HHH C HH C HH B C H H C HH C HH C HH C HH HC HHH C HH C HH CC HH C HH C HH HC HHH C HH C HH D C HH C HH C HH C HH H(i) W hich one of these structures, A , B , C or D , has the highest relative molecularmass?Y ou are not expected to do any calculations. (1)(ii) G ive one use of gasoline. (1)0620/23/M/J/13© UCLES 2013For Examiner’sUse(d) T he table shows the boiling points of the straight-chain hydrocarbons in the gasolinefraction.(i) O n the grid below, plot a graph to show how the boiling point changes with thenumber of carbon atoms in these hydrocarbons. Draw a smooth curve through the points.567891018016014012010080604020boiling point / °Cnumber of carbon atoms[3](ii)U se your graph to deduce the boiling point of the hydrocarbon with 7 carbon atoms.boiling point ............... °C [1]For(e)T he alkanes are a homologous series of hydrocarbons.Examiner’sUse(i)W hat is meant by the term homologous series?.................................................................................................................................... (2)(ii)A lkanes can be cracked to form alkenes and smaller alkanes.S tate the conditions needed for cracking..................................................................................................................................... (2)[Total: 13]© UCLES 2013[Turn over0620/23/M/J/130620/23/M/J/13© UCLES 2013For Examiner’sUse6 I nks are mixtures of different dyes.(a) A student used paper chromatography to separate the dyes in a particular ink.D escribe how paper chromatography is carried out. You may draw a diagram to help explain your answer. I n your description include● the apparatus you would use,●how chromatography is carried out............................................................................................................................................ ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [4] (b) The chromatogram below shows the results of a chromatography experiment. X , Y and Z are pure dyes containing only one compound.T he dyes present in four different inks, D , E , F and G are also shown.(i) W hich ink, D , E , F or G , contains all the dyes X , Y and Z ? (1)(ii) W hich ink, D ,E ,F orG , does not contain any of the dyes X , Y and Z ? (1)(iii) W hich ink contains the greatest number of different dyes? (1)ForExaminer’sUse(c) S ome inks contain ethanoic acid.C omplete the structure of ethanoic acid.[1](d) E thanoic acid can be used as a solvent.W hat is the meaning of the term solvent ? (1)(e) T he structure of a dye called Gambine R is shown below.C HO CCHH HNOHC C C C CCHC H(i) How many different types of atom are there in one molecule of Gambine R? (1)(ii) H ow many carbon atoms are there in one molecule of Gambine R? (1)[Total: 11]ForExaminer’sUse7 H ydrogen peroxide, H 2O 2, decomposes in the presence of an enzyme called peroxidase. The products of this reaction are water and oxygen.(a) (i) W hat is meant by the term enzyme ?.................................................................................................................................... (2)(ii) C omplete the symbol equation for this reaction........H 2O 2 → 2H 2O + O 2 [1] (b) A student followed the course of this reaction by measuring the volume of oxygenreleased over a period of time.T he diagram below shows some results that he obtained using hydrogen peroxide at three different concentrations.20406080100403020100volume of oxygen / cm 3time / secondsconcentration of H 2O 20.4 mol / dm 30.2 mol / dm 30.1 mol / dm 3(i) D escribe how the concentration of hydrogen peroxide affects the rate of this reaction............................................................................................................................... [1] (ii) O n the graph above, draw a line to show the course of the reaction when the startingconcentration of hydrogen peroxide is 0.3 mol / dm 3. [2] (iii)F or the concentration of hydrogen peroxide of 0.4 mol / dm 3, deduce●the volume of oxygen given off when the reaction is complete,........................ cm 3●the time it takes to produce 14 cm 3 of oxygen......................... seconds [2]ForExaminer’sUse(c) I n the presence of sulfuric acid, hydrogen peroxide reacts with iodide ions to form iodineand water. This involves the reduction of hydrogen peroxide.(i) W hat is the meaning of the term reduction ?.............................................................................................................................. [1] (ii) C omplete the word equation for the reaction of sulfuric acid with calcium hydroxide.sulfuric acid + calcium hydroxide → ............................ + ............................ (2)(iii) D escribe a test for iodide ions.test .............................................................................................................................result (2)[Total: 13]16Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included the publisher will be pleased to make amends at the earliest possible opportunity.University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.G ro u p140C eC e r i u m 58141P rP r a s e o d y m i u m 59144N d N e o d y m i u m 60P mP r o m e t h i u m61150S mS a m a r i u m62152E uE u r o p i u m63157G dG a d o l i n i u m64159T bT e r b i u m65162D yD y s p r o s i u m66165H oH o l m i u m67167E rE r b i u m68169T mT h u l i u m69173Y bY t t e r b i u m70175L uL u t e t i u m71232T hT h o r i u m 90P aP r o t a c t i n i u m 91238UU r a n i u m92N pN e p t u n i u m93P uP l u t o n i u m94A mA m e r i c i u m95C mC u r i u m96B kB e r k e l i u m97C fC a l i f o r n i u m98E sE i n s t e i n i u m99F mF e r m i u m100M dM e n d e l e v i u m101N oN o b e l i u m102L rL a w r e n c i u m1031HH y d r o g e n17L iL i t h i u m 323N aS o d i u m 1124M gM a g n e s i u m1240C aC a l c i u m 2045S c S c a n d i u m 2148T i T i t a n i u m2251V V a n a d i u m 2352C r C h r o m i u m 2455M n M a n g a n e s e 2556F e I r o n 2659C o C o b a l t 2759N i N i c k e l 2864C u C o p p e r 2965Z nZ i n c3070G aG a l l i u m3127A lA l u m i n i u m1311B B o r o n 512C C a r b o n614NN i t r o g e n716OO x y g e n819FF l u o r i n e928S iS i l i c o n1431PP h o s p h o r u s1532SS u l f u r1635.5C lC h l o r i n e1740A rA r g o n1820N eN e o n104H eH e l i u m273G eG e r m a n i u m3275A sA r s e n i c3379S eS e l e n i u m3480B rB r o m i n e3584K rK r y p t o n3639KP o t a s s i u m 1988S rS t r o n t i u m 3889Y Y t t r i u m 3991Z r Z i r c o n i u m4093N b N i o b i u m 4196M o M o l y b d e n u m 42T c T e c h n e t i u m 43101R u R u t h e n i u m 44103R h R h o d i u m 45106P d P a l l a d i u m 46108A gS i l v e r47112C dC a d m i u m48115I nI n d i u m49119S nT i n50122S bA n t i m o n y51128T eT e l l u r i u m52127II o d i n e53131X eX e n o n54137B aB a r i u m 56139L a L a n t h a n u m 57*178H fH a f n i u m72181T a T a n t a l u m 73184W T u n g s t e n 74186R e R h e n i u m 75190O s O s m i u m 76192I rI r i d i u m 77195P t P l a t i n u m78197A uG o l d79201H gM e r c u r y80204T lT h a l l i u m81207P bL e a d82209B iB i s m u t h83P oP o l o n i u m84A tA s t a t i n e85R nR a d o n86F rF r a n c i u m 87227A cA c t i n i u m899B eB e r y l l i u m4II I I I II V V V I V I I 085R bR u b i d i u m 37133C sC a e s i u m 55226R a R a d i u m 88T h e v o l u m e o f o n e m o l e o f a n y g a s i s 24d m 3a t r o o m t e m p e r a t u r e a n d p r e s s u r e (r .t .p .).a Xb a = r e l a t i v e a t o m ic m a s sX = a t o m i c s y m b o lb = p r o t o n (a t o m ic ) n u m b e rK e y *58-71 L a n t h a n o i d s e r i e s 90-103 A c t i n o i d s e r i e s D A T A S H E E T T h e P e r i o d i c T a b l e o f t h e E l e m e n t sPMT。

九天国际教育GCSE真题January 2014 QP - Paper 2C Edexcel Chemistry IGCSE

九天国际教育GCSE真题January 2014 QP - Paper 2C Edexcel Chemistry IGCSE

Turn over P42864A©2014 Pearson Education Ltd.1/1/1/1/*P42864A0120*Instructionst Use black ink or ball-point pen.t Fill in the boxes at the top of this page with your name,centre number and candidate number.t Answer all questions.t A nswer the questions in the spaces provided– there may be more space than you need.t Show all the steps in any calculations and state the units.t SInformationt The total mark for this paper is 60.t T he marks for each question are shown in brackets– use this as a guide as to how much time to spend on each question.Advicet Read each question carefully before you start to answer it.t Keep an eye on the time.t Write your answers neatly and in good English.t Try to answer every question.t Check your answers if you have time at the end.2*P42864A0220*3*P42864A0320*Turn overBLANK PAGE4*P42864A0420*5*P42864A0520*Turn over6*P42864A0620*2Bromine, chlorine, fluorine and iodine are elements in Group 7 of the Periodic Table.(a) Which two of these elements have the darkest colours?(1)....................................................................................................................................and ....................................................................................................................................(b) The equation for the reaction between hydrogen and chlorine isH 2 + Cl 2 o 2HClDifferent names are used for the product, depending on its state symbol.(i) What are the names used for HCl(g) and HCl(aq)?(2)HCl(g) .................................................................................................................................................................................................................................................................HCl(aq) ............................................................................................................................................................................................................................................................... (ii) The presence of HCl(g) can be confirmed by adding ammonia (NH 3) gas.State the observation in the reaction between HCl(g) and ammonia gas and write a chemical equation for the reaction.(2)observation ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................chemical equation ................................................................................................................................................................................................................................ (iii) The presence of chloride ions in HCl(aq) can be shown by mixing it with silvernitrate solution and dilute nitric acid.State the result of this test and complete the chemical equation for the reaction by adding the state symbols.(3)result .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................AgNO 3(.......................) + HCl(aq) o AgCl(.......................) + HNO 3(.......................)7*P42864A0720*Turn over8*P42864A0820*3Tungsten is a useful metal. It has the chemical symbol W. (a) One method of extracting tungsten involves heating a tungsten compound (WO 3)with hydrogen.(i) Suggest the chemical name of WO 3(1)....................................................................................................................................................................................................................................................................................(ii) Balance the equation for the reaction between WO 3 and hydrogen.(1)WO 3 + ............................H 2 o ............................W + ............................H 2O(iii) Why is this reaction described as reduction?(1)........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(b) Scheelite is an ore of tungsten. The main compound in scheelite has the percentage composition by mass Ca = 13.9%, W = 63.9%, O = 22.2%.Calculate the empirical formula of this compound.(3)empirical formula = ...................................................9*P42864A0920*Turn over(c) Tungsten can also be obtained by reacting tungsten fluoride with hydrogen.The equation for this reaction isWF 6 + 3H 2 o W + 6HF(i) In an experiment, a chemist used 59.6g of tungsten fluoride. What is the maximum mass of tungsten he could obtain from 59.6 g of tungsten fluoride?Relative formula mass of tungsten fluoride = 298(2)maximum mass = ................................................... g(ii) Starting with a different mass of tungsten fluoride, he calculates that the massof tungsten formed should be 52.0 g. In his experiment he actually obtains 47.5 g of tungsten.What is the percentage yield of tungsten in this experiment?(2)percentage yield = ................................................... %(Total for Question 3 = 10 marks)10*P42864A01020*4A student investigated the neutralisation of acids by measuring the temperature changeswhen alkalis were added to acids of known concentrations.He used this apparatus to add different volumes of sodium hydroxide solution to a fixed volume of dilute nitric acid.He used this method. Ɣ measure the temperature of 25.0 cm 3 of the acid in the polystyrene cupƔ add the sodium hydroxide solution in 5.0 cm 3 portions until a total of 30.0 cm 3has been added(a) State two properties of the sodium hydroxide solution that should be kept constantfor each 5.0 cm 3 portion.(2)1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................2 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................polystyrene cup11*P42864A01120*Turn over12*P42864A01220*13*P42864A01320*Turn over14*P42864A01420*(f)Another student used sulfuric acid instead of nitric acid in her experiments.She started with 25.0 cm 3 of sulfuric acid of concentration 0.650 mol/dm 3. She added 0.500 mol/dm 3 sodium hydroxide solution until the acid was completely neutralised.The equation for this reaction is2NaOH + H 2SO 4 o Na 2SO 4 + 2H 2O(i) Calculate the amount, in moles, of sulfuric acid used.(2)amount = ................................. mol(ii) Calculate the amount, in moles, of sodium hydroxide needed to neutralise thisamount of sulfuric acid.(1)amount = ................................. mol(iii) Calculate the volume, in cm 3, of sodium hydroxide solution needed to neutralisethis amount of sulfuric acid.(2)volume = ................................. cm 3(Total for Question 4 = 18 marks)15*P42864A01520*Turn over16*P42864A01620*(c)The equation for one reaction that could occur in process 2 is C x H y o C 5H 12 + 2C 2H 4(i) Deduce the formula of C x H y(1)....................................................................................................................................................................................................................................................................................(ii) Give the name of the compound C 5H 12(1)....................................................................................................................................................................................................................................................................................(iii) Draw the displayed formula of C 2H 4(1)(d) The structural formula of chloroethene formed in process 3 is CH 2CHClThe polymer formed in process 4 is poly(chloroethene).Draw the displayed formula for the repeat unit of poly(chloroethene).(2)17*P42864A01720*(e)Poly(chloroethene) is formed by addition polymerisation. Nylon is formed by condensation polymerisation.(i) How does condensation polymerisation differ from addition polymerisation?(1)........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(ii) Poly(chloroethene) and nylon do not biodegrade easily.What is meant by the term biodegrade ?(2)................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(iii) What feature of addition polymers makes it difficult for them to biodegrade?(1)........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(Total for Question 5 = 13 marks)(TOTAL FOR PAPER = 60 MARKS)18*P42864A01820*BLANK PAGE19*P42864A01920*BLANK PAGE20*P42864A02020*BLANK PAGE。

九天国际教育GCSE真题June 2013 QP - Unit C3 (H) Edexcel Chemistry GCSE

九天国际教育GCSE真题June 2013 QP - Unit C3 (H) Edexcel Chemistry GCSE

Turn over P41941A©2013 Pearson Education Ltd.1/1/1/1/1/1/*P41941A0120*Instructions•Use black ink or ball-point pen.•Fill in the boxes at the top of this page with your name,centre number and candidate number.•Answer all questions.•Answer the questions in the spaces provided– there may be more space than you need.Information• The total mark for this paper is 60.•The marks for each question are shown in brackets– use this as a guide as to how much time to spend on each question.•Questions labelled with an asterisk (*) are ones where the quality of yourwritten communication will be assessed– y ou should take particular care with your spelling, punctuation and grammar, aswell as the clarity of expression, on these questions.Advice•Read each question carefully before you start to answer it.•Keep an eye on the time.•Try to answer every question.•Check your answers if you have time at the end.2*P41941A0220*3*P41941A0320*Turn overBLANK PAGEQuestions begin on next page.4*P41941A0420*5*P41941A0520*Turn over(iv) The electrolysis of sodium chloride solution does not produce metallic sodium.State what change you would make to the electrolyte to obtain metallic sodium.(1)........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(b) (i) When copper sulfate solution is electrolysed using inert electrodes, oxygen isformed at the positively charged anode.Explain how the oxygen is formed from ions in the solution.(2)................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(ii) The other product is copper. 1.27 g of copper were produced in an experiment.Calculate the number of moles of copper, Cu, produced in this experiment.(Relative atomic mass: Cu = 63.5)(1)....................................................................................................................................................................................................................................................................................amount of copper produced = ............................................. mol(Total for Question 1 = 8 marks)6*P41941A0620*7*P41941A0720*Turn over(c)(i) Describe what you would see when solid sodium carbonate is added to diluteethanoic acid.(2)................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(ii) When ethanoic acid reacts with ethanol, one of the products is the ester, ethylethanoate.Complete the balanced equation for this reaction.(2)CH 3COOH + C 2H 5OH → .................................................................................................. + ..................................................................................................(Total for Question 2 = 8 marks)8*P41941A0820*Ethanol3 (a) Ethanol can be produced by reacting ethene with steam.Write the balanced equation for this reaction.(2)....................................................................................................................................................................................................................................................................................(b) Ethanol can also be produced by fermentation.Describe how ethanol can be produced from sugar by fermentation.(2)....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(c) A country has large amounts of available fertile land. It has no reserves of crude oil. It is not a wealthy country.Explain why this country produces the ethanol it needs by fermentation rather than from ethene.(3)........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................9*P41941A0920*Turn over(d)Ethanol is a member of the homologous series of alcohols. The first three members of the series aremethanol CH 3OH ethanolC 2H 5OHpropanol C 3H 7OHUse the formulae of these molecules to explain why these alcohols are membersof the same homologous series.(2)........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(Total for Question 3 = 9 marks)10*P41941A01020*Ammonia4 When nitrogen and hydrogen react to form ammonia, the reaction can reach adynamic equilibrium.N 2(g) + 3H 2(g) 2NH 3(g)(a) Explain what is meant by a dynamic equilibrium .(2)................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(b) In industry, the reaction between nitrogen and hydrogen is affected by the conditionsused. (i) The pressure used is 250 atmospheres.Explain how the use of a higher pressure would affect the equilibrium yield ofammonia.(2)................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(ii) The reaction between nitrogen and hydrogen to form ammonia is exothermic. The temperature used is 450°C.Explain how the use of a lower temperature would affect the equilibrium yield of ammonia.(2)................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................11*P41941A01120*Turn over(iii) Even at 450°C, the reaction is very slow. State what is used in industry to overcome this problem. (1).................................................................................................................................................................................................................................................................................... (c) (i) Calculate the minimum volume of hydrogen required to completely convert 1000 dm 3 of nitrogen into ammonia.(1)........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................volume of hydrogen = .............................................. dm 3 (ii) Ammonia is reacted with excess nitric acid, HNO 3, to make ammonium nitrate, NH 4NO 3.N H 3 + HNO 3 → NH 4NO 3Calculate the mass of ammonium nitrate produced by the complete reaction of 34 g of ammonia. (Relative atomic masses H = 1.0, N = 14, O = 16)(3)........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ mass of ammonium nitrate produced = .............................................. g(Total for Question 4 = 11 marks)12*P41941A01220*BLANK PAGE13*P41941A01320*Turn overWhat type of reaction takes place when hydrochloric acid reacts with sodium14*P41941A01420**(c) Sodium chloride solution can be made from dilute hydrochloric acid and sodium hydroxide solution.Describe a titration experiment to find the exact volume of hydrochloric acid needed to neutralise 25.0 cm 3 of sodium hydroxide solution and how you would use this result to obtain pure, dry crystals of sodium chloride. (6)................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................15*P41941A01520*Turn over(d) Sodium hydroxide solution is titrated with dilute hydrochloric acid.The results of the experiment are volume of sodium hydroxide solution = 25.0 cm 3volume of 0.100 mol dm –3 hydrochloric acid usedrough titration = 23.1 cm 3 1st titration = 22.6 cm 32nd titration = 22.8 cm 3 (i) State the volume of hydrochloric acid that must be used to calculate the concentration of sodium hydroxide solution.(1)volume of hydrochloric acid = .......................................... cm 3(ii) In a different experiment, 25.0 cm 3 of sodium hydroxide solution reacted with 23.2 cm 3 of 0.100 mol dm –3 hydrochloric acid, HCl. Calculate the concentration of this sodium hydroxide solution, NaOH, in mol dm –3.(3)NaOH + HCl → NaCl + H 2O ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ concentration of sodium hydroxide solution = .................................................... mol dm –3(Total for Question 5 = 12 marks)16*P41941A01620*17*P41941A01720**(c) A technician found some colourless crystals of a substance left, unlabelled, in a beaker in a laboratory.She knew the substance was one of potassium sulfate, potassium iodide, sodium sulfate or sodium iodide. Explain how, using chemical tests, the technician could find out if the substance left in the beaker was potassium sulfate, potassium iodide, sodium sulfate or sodium iodide.You may include equations in your answer. (6).................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(Total for Question 6 = 12 marks)TOTAL FOR PAPER = 60 MARKS。

九天国际教育GCSE真题June 2012 QP - Unit 2 (H) OCR Chemistry (A) GCSE

九天国际教育GCSE真题June 2012 QP - Unit 2 (H) OCR Chemistry (A) GCSE

INSTRUCTIONS TO CANDIDATES •Write your name, centre number and candidate number in the boxes above. Please write clearly and in capital letters.• Use black ink. HB pencil may be used for graphs and diagrams only.• Answer all the questions.• Read each question carefully. Make sure you know what you have to do before startingyour answer.• Write your answer to each question in the space provided. Additional paper may beused if necessary but you must clearly show your candidate number, centre number and question number(s).• Do not write in the bar RMATION FOR CANDIDATES • Y our quality of written communication is assessed in questions marked with a pencil ( ).• The number of marks is given in brackets [ ] at the end of each question or part question.• The total number of marks for this paper is 60.• This document consists of 20 pages. Any blank pages are indicated.• The Periodic T able is printed on the back page.•A list of qualitative tests for ions is printed on page 2.OCR is an exempt CharityTurn over© OCR 2012 [R/601/7592]DC (SHW 00678 4/11) 49644/4*A 135370612*© OCR 2012TWENTY FIRST CENTURY SCIENCE DATA SHEETQualitative analysisTests for ions with a positive chargeIonTestObservationcalcium Ca 2+add dilute sodium hydroxidea white precipitate forms; the precipitate does not dissolve in excess sodium hydroxide copper Cu 2+add dilute sodium hydroxidea light blue precipitate forms; the precipitate does not dissolve in excess sodium hydroxide iron(II )Fe 2+add dilute sodium hydroxidea green precipitate forms; the precipitate does not dissolve in excess sodium hydroxide iron(III )Fe 3+add dilute sodium hydroxidea red-brown precipitate forms; the precipitate does not dissolve in excess sodium hydroxide zinc Zn 2+add dilute sodium hydroxidea white precipitate forms; the precipitate dissolves in excess sodium hydroxideTests for ions with a negative chargeIonTestObservationcarbonate CO 32−add dilute acidthe solution effervesces; carbon dioxide gas is produced (the gas turns lime water from colourless to milky)chloride C l −add dilute nitric acid,then add silver nitrate a white precipitate forms bromide Br −add dilute nitric acid,then add silver nitrate a cream precipitate forms iodide I −add dilute nitric acid,then add silver nitrate a yellow precipitate formssulfate SO 42−add dilute acid,then add barium chloride or barium nitratea white precipitate formsAnswer all the questions.1 Rubidium is an element in Group 1.Find rubidium on the Periodic T able.(a)Which of the following statements about rubidium are true and which are false?Put a tick (✓) in the correct box for each statement.true falseRubidium is more reactive than sodium.Rubidium is a non-metal.Rubidium has a lower proton number than lithium.Rubidium reacts with water to make hydrogen gas.[2]The formula of lithium hydroxide is LiOH.(b)What is the formula of rubidium hydroxide? (1)formula[Total: 3]Turn over © OCR 20122 (a) The table shows data about the physical properties of some elements.Element Appearance atroom temperature Melting pointin °CBoiling pointin °CDoes the elementconduct electricity?Chlorine green gas–101–34noBromine red-brown liquid–7 59noIodine dark grey solid114184noLithium shiny solid1801342yesSodium shiny solid97.8883yesPotassium shiny solid63.5759yes Mendeleev put these elements into two groups in the Periodic T able.He used their similarities and differences to put lithium, sodium and potassium in one group.He put chlorine, bromine and iodine into another group.Discuss which data in the table support, and which data do not support, Mendeleev’s idea of organising these elements into the two groups.T he quality of written communication will be assessed in your answer............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ (6)© OCR 2012(b)Sodium and potassium are both in Group 1 of the Periodic T able.Give one similarity and one difference between the arrangement of electrons in an atom ofsodium and an atom of potassium.................................................................................................................................................... (2)[Total: 8]3 The table below shows the number of protons and electrons in five particles, A, B, C, D and E.Each particle is either an atom or an ion.Particle Number of protons Number of electronsA33B99C32D810E1717Use the letters A, B, C, D and E, to answer the following questions.(a)(i) Which two particles are atoms from Group 7 of the Periodic T able?answer .......................... and .. (1)(ii) Which two particles are an atom and an ion of the same element?answer .......................... and .. (1)(iii) Which particle is a negative ion? (1)answer Particle C is an ion.(b)What is the overall charge on particle C? (1)answer[Total: 4]Turn over © OCR 20124 Liz cuts a piece of sodium with a knife.When first cut, the surface of the sodium is very shiny.(a)Describe and explain how the appearance of the sodium changes over the next few minutes....................................................................................................................................................................................................................................................................................................... (3)) to make sodium chloride.(b)Liz reacts sodium (Na) with chlorine (C l2sodium + chlorine chlorideWrite a balanced symbol equation for this reaction. (2)[Total: 5]© OCR 2012BLANK PAGEQuestion 5 begins on page 8PLEASE DO NOT WRITE ON THIS PAGETurn over © OCR 2012© OCR 20125Four gases that are in the air are nitrogen, oxygen, argon and carbon dioxide.(a) Draw a straight line to connect the name of each gas to the correct arrangement of atomsand its relative mass .nitrogenname oxygen argon carbon dioxide relative mass =32arrangement of atoms and its relative mass[2](b) Which of the following statements about gases in the air are true ? Put ticks (✓) in the boxes next to the two correct answers.All of the gases in the air are elements. Air contains only non-metal elements.There are weak attractions between molecules in air. All the gases have high melting points and boiling points.The gases are good conductors of electricity.[2](c)Molecules in the air contain atoms that are held together by strong covalent bonds.Which of the following statements are the best descriptions of covalent bonds in these molecules?Put ticks (✓) in the boxes next to the two best answers.A covalent bond is made by sharing electrons.The atoms gain positive or negative charges when the bond is made.The atoms are held together by the attractions between the nuclei of theatoms and the electrons between them.Each atom is surrounded by a sea of electrons that can move.The atoms are bonded covalently into large, three dimensional structures.[2][Total: 6]Turn over © OCR 2012© OCR 20126Amy and Zak test samples of the same solution.AmyZakThey do tests to identify the positive metal ions and the negative ions in the solution. They use a fresh sample for each test.The boxes show the tests they use and their results.Amy’s resultsTest Result Add a few drops of dilute sodium hydroxide.white precipitateAcidify and add dilute silver nitrate.white precipitateAcidify and add dilute barium chloride.white precipitateConclusionThe solution contains a mixture of calcium sulfate and calcium chloride.Zak’s resultsTest Result Add a few drops of dilute sodium hydroxide……then add more dilute sodium hydroxide.white precipitateprecipitate dissolves Acidify and add dilute silver nitrate.white precipitateConclusionThe solution only contains zinc chloride.Use the data sheet on page 2 to help you answer this question.Amy and Zak’s teacher tells them that neither of their conclusions are fully correct.Look at Amy and Zak’s tests and their results.Explain why neither Amy or Zak has a fully correct conclusion.Identify the correct metal and non-metal ions in the solution.T he quality of written communication will be assessed in your answer. .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .. (6)[Total: 6]7 Jed and Kay live near a lead mine.The mineral massicot is dug out of this mine.Massicot contains lead oxide, PbO.Lead metal can be extracted from massicot by heating it with carbon.2PbO + C2What is the maximum mass of lead that can be extracted from 446 g of lead oxide?(a)Use the Periodic T able on page 20 to find the relative atomic masses.Start by working out the relative formula mass of lead oxide.relative formula mass of lead oxide, PbO = ....................mass of lead that can be extracted from 446 g lead oxide = ..................... g[3](b)The lead mine produces millions of tonnes of lead ore.Jed and Kay are talking about the advantages and disadvantages of living near the lead mine.(i) Kay has just moved into the area. She has a young family.Give one advantage and one disadvantage to Kay of living near a lead mine....................................................................................................................................................................................................................................................................................... (2)(ii) Jed and Kay talk about lead processing at the mine.Suggest reasons that Kay could give for not closing the mine.................................................................................................................................................................................................................................................................................................................................................................................................................................. (2)[Total: 7]8Sue reacts copper carbonate with a dilute acid to make copper chloride.dilute acidcopper carbonate(a)Complete the word and symbol equations for the reaction by filling in the empty boxes.copper carbonate+copper chloride+carbon dioxide+CuCO 3+2HClCuC l 2+CO 2+[2](b) Which other chemicals react with the same dilute acid to form copper chloride?Put rings two correct answers.copper hydroxide copper nitrate copper oxide copper sulfate[1](c) (i) Sue measures the pH during the reaction.Describe and explain how the pH changes during the reaction............................................................................................................................................ .. (2)(ii) What could Sue use to measure the pH?Put ticks (✓) in the boxes next to each correct answer.sodium hydroxide pHmeter litmusuniversal indicator[1][Total: 6]9 Alex wants to use a titration method to make some potassium sulfate.Alex begins by measuring 25.0 cm3 of dilute potassium hydroxide into a flask.(a)He reacts the potassium hydroxide with dilute sulfuric acid.25.0cm3 of dilute potassium hydroxideAlex does titrations to find out the volume of acid that exactly reacts with the 25.0 cm3 dilute potassium hydroxide.Describe in detail how Alex does the titrations.The quality of written communication will be assessed in your answer............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ (6)(i) Alex makes a solution of potassium sulfate in his titration.(b)Alex makes crystals from his solution. He makes 4.5 g of potassium sulfate crystals.This is 90% of his theoretical yield.What is his theoretical yield?Put a ring around the correct answer.0.05% 4.05 g 5 g 9 g 10% 45%[1](ii) Alex did not dry his crystals properly.His crystals contained 1.0 g of water.Calculate Alex’s percentage yield after he has dried his crystals properly.percentage yield = ......................................................% [2]Alex’s friend Ben does a similar experiment.(c)He starts with the same volume (25.0 cm3) of the same concentration of potassium hydroxide solution.He neutralises this with a more dilute solution of acid.(i) What factor is Ben changing in his experiment? (1)(ii) What effect will changing this factor have on the mass of potassium sulfate crystals that Ben makes?Explain your reasoning....................................................................................................................................................................................................................................................................................... (2)(d)Alex does some more experiments. He reacts dilute sodium hydroxide with hydrochloric acid.He measures how much hydrochloric acid he needs to neutralise 20 cm3 of dilute sodium hydroxide.He tests different concentrations of hydrochloric acid.He uses the same concentration of sodium hydroxide every time.The table shows some of Alex’s results.Concentration of hydrochloric acidin g / dm3Volume of hydrochloric acid needed to neutralise 20 cm3 sodium hydroxide in cm310.080.020.040.020.013.380.010.0(i) Complete the table by filling in the two empty boxes. [2](ii) Complete the ionic equation for the reaction that happens during neutralisation.Choose formulae from this list.H+H2OH–H2O O2–O2+[1][Total: 15] END OF QUESTION PAPERBLANK PAGEPLEASE DO NOT WRITE ON THIS PAGEPLEASE DO NOT WRITE ON THIS PAGECopyright InformationOCR is committed to seeking permission to reproduce all third-party content that it uses in its assessment materials. OCR has attempted to identify and contact all copyright holders whose work is used in this paper. T o avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced in the OCR Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download from our public website () after the live examination series.If OCR has unwittingly failed to correctly acknowledge or clear any third-party content in this assessment material, OCR will be happy to correct its mistake at the earliest possible opportunity.For queries or further information please contact the Copyright Team, First Floor, 9 Hills Road, Cambridge CB2 1GE.OCR is part of the Cambridge Assessment Group; Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.20T h e P e r i o d i c T a b l e o f t h e E l e m e n t s* T h e l a n t h a n o i d s (a t o m i c n u m b e r s 58-71) a n d t h e a c t i n o i d s (a t o m i c n u m b e r s 90-103) h a v e b e e n o m i t t e d .T h e r e l a t i v e a t o m i c m a s s e s o f c o p p e r a n d c h l o r i n e h a v e n o t b e e n r o u n d e d t o t h e n e a r e s t w h o l e n u m b e r .12345670K e y1H h y d r o g e n 14H eh e l i u m27L il i t h i u m39B eb e r y l l i u m4r e l a t i v e a t o m i c m a s s a t o m i c s y m b o ln a m e a t o m i c (p r o t o n ) n u m b e r 11Bb o r o n512Cc a r b o n 614N n i t r o g e n716O o x y g e n819Ff l u o r i n e920N en e o n1023N as o d i u m1124M gm a g n e s i u m1227A la l u m i n i u m1328S is i l i c o n1431Pp h o s p h o r u s 1532Ss u l f u r 1635.5C lc h l o r i n e 1740A ra r g o n1839Kp o t a s s i u m1940C ac a l c i u m2045S cs c a n d i u m2148T it i t a n i u m2251Vv a n a d i u m2352C rc h r o m i u m2455M n m a n g a n e s e 2556F ei r o n2659C o c o b a l t 2759N i n i c k e l 2863.5C uc o p p e r 2965Z n z i n c 3070G ag a l l i u m3173G eg e r m a n i u m 3275A sa r s e n i c 3379S es e l e n i u m 3480B rb r o m i n e 3584K rk r y p t o n3685R br u b i d i u m3788S rs t r o n t i u m3889Yy t t r i u m3991Z rz i r c o n i u m4093N bn i o b i u m4196M om o l y b d e n u m42[98]T c t e c h n e t i u m 43101R ur u t h e n i u m44103R hr h o d i u m 45106P dp a l l a d i u m46108A gs i l v e r 47112C d c a d m i u m48115I ni n d i u m 49119S nt i n50122S ba n t i m o n y51128T et e l l u r i u m52127Ii o d i n e53131X ex e n o n54133C sc a e s i u m55137B ab a r i u m56139L a *l a n t h a n u m57178H fh a f n i u m72181T at a n t a l u m73184Wt u n g s t e n74186R er h e n i u m75190O so s m i u m 76192I r i r i d i u m 77195P t p l a t i n u m78197A ug o l d79201H gm e r c u r y 80204T l t h a l l i u m 81207P bl e a d82209B ib i s m u t h83[209]P op o l o n i u m 84[210]A ta s t a t i n e85[222]R nr a d o n86[223]F rf r a n c i u m 87[226]R ar a d i u m 88[227]A c *a c t i n i u m 89[261]R f r u t h e r f o r d i u m104[262]D bd u b n i u m105[266]S gs e a b o r g i u m106[264]B hb o h r i u m 107[277]H s h a s s i u m 108[268]M t m e i t n e r i u m109[271]D sd a r m s t a d t i u m110[272]R g r o e n t g e n i u m111E l e m e n t s w i t h a t o m i c n u m b e r s 112-116 h a v e b e e n r e p o r t e d b u t n o t f u l l y a u t h e n t i c a t e dPMT。

九天国际教育GCSE真题June 2010 (v3) QP - Paper 1 CIE Chemistry IGCSE

九天国际教育GCSE真题June 2010 (v3) QP - Paper 1 CIE Chemistry IGCSE

This document consists of 15 printed pages and 1 blank page.IB10 06_0620_13/RP© UCLES 2010[Turn over*1150134897*UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary EducationCHEMISTRY 0620/13Paper 1 Multiple Choice May/June 201045 MinutesAdditional Materials: Multiple Choice Answer Sheet Soft clean eraserSoft pencil (type B or HB is recommended)READ THESE INSTRUCTIONS FIRSTWrite in soft pencil.Do not use staples, paper clips, highlighters, glue or correction fluid.Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you.There are forty questions on this paper. Answer all questions. For each question there are four possibl e answers A , B , C and D .Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet.Read the instructions on the Answer Sheet very carefully.Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Periodic Table is printed on page 16. You may use a calculator.© UCLES 2010 0620/13/M/J/101 The diagram shows a cup of tea.Which row describes the water particles in the air above the cup compared with the water particles in the cup?moving fastercloser togetherA B C D2 Which row shows the change that takes place when element X gains the new particle shown?particle gained changeA electronan isotope of element X is formedB electron the element one place to the right of X in the Periodic Table is formedC proton an isotope of element X is formedDprotonthe element one place to the right of X in the Periodic Table is formed3 The symbols of two atoms may be written as shown.X 5223Y5224Which statement about these atoms is correct?A They are different elements because they have different numbers of neutrons.B They are different elements because they have different numbers of protons.C They are isotopes of the same element because they have the same nucleon number.D They are isotopes of the same element because they have the same proton number.© UCLES 2010 0620/13/M/J/10[Turn over4 The diagram shows an atom.electronnucleus containing nine particlesWhat is the proton number and neutron number of the atom?proton numberneutron numberA 4 5B 4 9C 5 4 D5 95 A frui t dri nk coloured orange contai ns a di ssolved mi xture of red and yellow colouri ng agents.One of these colouring agents is suspected of being illegal.Which method could be used to show the presence of this illegal colouring agent?A chromatographyB distillationC evaporationD filtration6 A student carries out an experiment to find how fast 3 cm pieces of magnesium ribbon dissolve in 10 cm 3 samples of sulfuric acid at different temperatures.Which piece of apparatus does the student not need? A balanceB measuring cylinderC stop-clockD thermometer© UCLES 2010 0620/13/M/J/10The electrolytes are listed below.cell 1 aqueous sodium chloride cell 2concentrated hydrochloric acid cell 3molten lead(II ) bromideIn which cells is a gas formed at both electrodes? A 1 and 2B 1 and 3C2 onlyD 3 only8 The diagram shows apparatus for plating a spoon with silver.Which statement is not correct?A Silver would stick to the spoon because it is a very reactive metal.B The electrolyte would be a silver salt dissolved in water.C The metal electrode would be made from silver.D The spoon would be connected to the negative of the power supply.9 Aqueous copper(II ) sulfate solution is electrolysed using inert electrodes.Copper(II ) i ons (Cu 2+), hydrogen i ons (H +), hydroxi de i ons (OH –) and sulfate i ons (−24SO ) are present in the solution.To which electrodes are the ions attracted during this electrolysis?attracted to anodeattracted to cathodeA Cu 2+ and H + OH – and −24SOB Cu 2+ and −24SOH + and OH –C H + and OH – Cu 2+ and −24SOD OH – and −24SO Cu 2+ and H +© UCLES 2010 0620/13/M/J/10[Turn over10 In which compounds are pairs of electrons shared between atoms?1 sodium chloride2 me t hane3 lead bromideA 1 onlyB 2 onlyC 1 and 3D 1, 2 and 311 Element X has six electrons in its outer shell.= electronkeyeHow could the element react?A by gaining two electrons to form a positive ionB by losing six electrons to form a negative ionC by sharing two electrons with two electrons from another element to form two covalent bondsD by sharing two electrons with two electrons from another element to form four covalent bonds12 Hydrogen and chlorine react as shown.1 molecule of hydrogen + 1 molecule of chlorine →2 moleculesof hydrogen chlorideWhat is the equation for this reaction?A 2H + 2C l → 2HC lB 2H + 2C l → H 2C l 2 C H 2 + C l 2 → 2HC lD H 2 + C l 2 → H 2C l 213Which name is given to mixtures of metals?A alloysB compoundsC oresD salts14Iron is extracted from iron oxide using carbon monoxide as shown in the equation.iron oxide + carbon monoxide → iron + carbon dioxide What does the equation show?A Carbon monoxide is oxidised to carbon dioxide.B Carbon monoxide is reduced to carbon dioxide.C Iron is oxidised to iron oxide.D Iron oxide is oxidised to iron.15 A student investigates the rate of reaction between marble chips and hydrochloric acid.The loss in mass of the reaction flask is measured.The graph shows the results of two experiments, P and Q.mass ofreaction flaskWhich change explains the difference between P and Q?A A catalyst is added in P.B A higher temperature is used in P.C Bigger marble chips are used in Q.D Hydrochloric acid is more concentrated in Q.© UCLES 2010 0620/13/M/J/10© UCLES 2010 0620/13/M/J/10[Turn over16cloudsseawater vapourWha t is the energy cha nge a nd wha t na me is given to the type of cha nge when wa ter evaporates?energy change type of change A energy given out endothermic B energy given out exothermic C energy taken in endothermic Denergy taken inexothermic17 Which process is not exothermic?A burning a fossil fuelB obtaining lime from limestoneC radioactive decay of 235UD reacting hydrogen with oxygen18 When pink cobalt(II ) sulfate crystals are heated, they form steam and a blue solid.When water is added to the blue solid, it turns pink and becomes hot.Which terms describe the pink cobalt(II ) sulfate crystals and the reactions?pink cob alt sulf a tere a ctionsA a queous irreversibleB a queous reversibleC hydr a ted irreversibleD hydr a ted reversible19 An element melts at 1455°C, has a density of 8.90g/cm3 and forms a green chloride.Where in the Periodic Table is this element found?A BCD20An excess of copper(II) oxide is a dded to dilute sulfuric a cid to ma ke crysta ls of hydra ted copper(II) sulfate.The processes listed may be used to obtain crystals of hydrated copper(II) sulfate.1 concentrate the resulting solution2 filter3 heat the crystals4 wash the crystalsWhich processes are needed and in which order?A1, 2, 3 and 4B1, 2, 4 and 3C2, 1, 2 and 3D2, 1, 2 and 421 Which is not a property of Group I metals?A They are soft and can be cut with a knife.B They corrode rapidly when exposed to oxygen in the air.C They produce an acidic solution when they react with water.D They react rapidly with water producing hydrogen gas.© UCLES 2010 0620/13/M/J/1022Aqueous sodium hydroxide is added to a solid, X, and the mixture is heated.A green precipitate is formed and an alkaline gas is given off.Which ions are present in X?NH and Fe2+A +4NH and Fe3+B +4C OH– and Fe2+D OH– and Fe3+23An aqueous solution of the organic compound methylamine has a pH greater than 7.Which statement about methylamine is correct?A It neutralises an aqueous solution of sodium hydroxide.B It reacts with copper(II) carbonate to give carbon dioxide.C It reacts with hydrochloric acid to form a salt.D It turns blue litmus red.24The positions in the Periodic Table of four elements are shown.Which element is most likely to form an acidic oxide?ABCD© UCLES 2010 0620/13/M/J/10 [Turn overgas XWhat is gas X?A carbon dioxideB chlorineC hydrogenD oxygen26 A student added dilute hydrochloric acid to four metals and recorded the results.Not all of the results are correct.resultsmetal gas given off1 copper yes2 iron yes3 magnesium no4 zinc yesWhich two results are correct?A 1 and 3B 1 and 4C 2 and 3D 2 and 4© UCLES 2010 0620/13/M/J/1027An element does not conduct electricity and exists as diatomic molecules.In which area of the Periodic Table is the element to be found?BA C D28Copper, iron and zinc are all used as pure metals.Which of these three metals are also used in alloys?co pper iro n zincABCD29Solutions of a halogen and a sodium halide are mixed.Which mixture darkens in colour because a reaction occurs?A bromine and sodium chlorideB bromine and sodium fluorideC chlorine and sodium fluorideD chlorine and sodium iodide30Some properties of four elements are shown in the table.Which element is a metal?melting point/°C electrical conductivitywhen liquidelectrical conductivitywhen solidA –7 lo w lo w B 801 high lo wC 1535 high highD 3550 lo w lo w31The diagram shows three types of item.cutlery cooking pan instruments used in hospitalsWhich method of rust prevention can be used for all three types of item?A coating with plasticB covering with greaseC galvanisingD using stainless steel32Aluminium is an important metal with many uses.Some of its properties are listed.1It is a good conductor of heat.2It is a reactive metal.3It has a low density.4It has an oxide layer that prevents corrosion.Which set of properties help to explain the use of aluminium for cooking and storing food?A 1, 2 and 3B 1, 2 and 4C 1, 3 and 4D 2, 3 and 433To grow roses, a fertiliser containing nitrogen, phosphorus and potassium is needed.For the best flowers, the fertiliser should contain a high proportion of potassium.Which fertiliser is best for roses?proportion by massfertiliserN P KA 9 0 25B 13 13 20C 29 5 0D 29 15 534Which statements about water are correct?1 Water is treated with chlorine to kill bacteria.2 Household water may contain salts in solution.3 Water is used in industry for cooling.4 Water for household use is filtered to remove soluble impurities.A1, 2 and 3 B 1 and 4 C2, 3 and 4 D1, 2, 3 and 435Which statement about methane is not correct?A It is a liquid produced by distilling petroleum.B It is produced as vegetation decomposes.C It is produced by animals such as cows.D It is used as a fuel.36 Which compound in polluted air can damage stonework and kill trees?A carbon dioxideB carbon monoxideC lead compo u ndsD s u lf u r dioxide37Diesel, petrol and bitumen are allA fuels.B hydrocarbons.C lubricants.D waxes.38 A macromolecule is a very large molecule.Macromolecules can be made by joining smaller molecules together. This is called polymerisation.Which row in the table describes the formation of a polymer?monomer polymerA ethane poly(ethane)B ethene poly(ethene)C ethane poly(ethene) Dethene poly(ethane)39 Which structure shows a compound that belongs to a different homologous series to propane?A B C DCC HH H H HC H HHHC H HHC C C H HH HH HHC H H HCC C H H H H H HHHH40Which structure is incorrect ?HH H HHHC C C A HH H HHHC C BHH O HOC CHD HH H HOC C HHBLANK PAGE16Per mission to r epr oduce items wher e thir d-par ty owned mater ial pr otected by copyr ight is included has been sought and clear ed wher e possible. Ever y reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity.University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. G r o u p140C eC e r i u m 58141P rP r a s e o d y m i u m 59144N d N e o d ym i u m 60P mP r o m e t h i u m61150S mS a m a r i u m62152E uE u r o p i u m63157G dG a d o l i n i u m64159T bT e r b i u m65162D yD y s p r o s i u m66165H oH o l m i u m67167E rE r b i u m68169T mT h u l i u m69173Y bY t t e r b i u m70175L uL u t e t i u m71232T hT h o r i u m 90P aP r o t a c t i n i u m 91238UU r a n i u m92N pN e p t u n i u m93P uP l u t o n i u m94A mA m e r i c i u m95C mC u r i u m96B kB e r k e l i u m97C fC a l i f o r n i u m98E sE i n s t e i n i u m99F mF e r m i u m100M dM e n d e l e v i u m101N oN o b e l i u m102L rL a w r e n c i u m1031HH y d r o g e n17L iL i t h i u m 323N aS o d i u m 1124M gM a g n e s i u m1240C aC a l c i u m 2045S c S c a n d i u m 2148T i T i t a n i u m2251V V a n a d i u m 2352C r C h r o m i u m 2455M n M a n g a n e s e 2556F e I r o n 2659C o C o b a l t 2759N i N i c k e l 2864C u C o p p e r 2965Z n Z i n c3070G aG a l l i u m3127A l A l u m i n i u m1311B B o r o n 512C C a r b o n614NN i t r o g e n716OO x y g e n819FF l u o r i n e928S iS i l i c o n1431PP h o s p h o r u s1532SS u l f u r1635.5C lC h l o r i n e1740A rA r g o n1820N eN e o n104H eH e l i u m273G eG e r m a n i u m3275A sA r s e n i c3379S eS e l e n i u m3480B rB r o m i n e3584K rK r y p t o n3639KP o t a s s i u m 1988S rS t r o n t i u m 3889Y Y t t r i u m 3991Z r Z i r c o n i u m4093N b N i o b i u m 4196M o M o l y b d e n u m 42T c T e c h n e t i u m 43101R u R u t h e n i u m 44103R h R h o d i u m 45106P d P a l l a d i u m 46108A g S i l v e r47112C dC a d m i u m48115I nI n d i u m49119S nT i n50122S bA n t i m o n y51128T eT e l l u r i u m52127II o d i n e53131X eX e n o n54137B aB a r i u m 56139L a L a n t h a n u m 57*178H fH a f n i u m72181T a T a n t a l u m 73184W T u n g s t e n 74186R e R h e n i u m 75190O s O s m i u m 76192I rI r i d i u m 77195P t P l a t i n u m78197A uG o l d79201H gM e r c u r y80204T lT h a l l i u m81207P bL e a d82209B iB i s m u t h83P oP o l o n i u m84A tA s t a t i n e85R nR a d o n86F rF r a n c i u m 87227A cA c t i n i u m899B eB e r y l l i u m4II I I I II V V V I V I I 085R bR u b i d i u m 37133C sC a e s i u m 55226R a R a d i u m 88T h e v o l u m e o f o n e m o l e o f a n y g a s i s 24d m 3a t r o o m t e m p e r a t u r e a n d p r e s s u r e (r .t .p .).a Xb a = r e l a t i v e a t o m ic m a s sX = a t o m i c s y m b o lb = p r o t o n (a t o m ic ) n u m b e rK e y *58-71 L a n t h a n o i d s e r i e s 90-103 A c t i n o i d s e r i e s D A T A S H E E T T h e P e r i o d i c T a b l e o f t h e E l e m e n t sPMT。

九天国际教育GCSE真题November 2016 (v3) QP - Paper 6 CIE Chemistry IGCSE

九天国际教育GCSE真题November 2016 (v3) QP - Paper 6 CIE Chemistry IGCSE

This document consists of 8 printed pages and 4 blank pages.[Turn overIB16 11_0620_63/3RP © UCLES 2016READ THESE INSTRUCTIONS FIRSTWrite your Centre number, candidate number and name on all the work you hand in.Write in dark blue or black pen.You may use an HB pencil for any diagrams or graphs.Do not use staples, paper clips, glue or correction fluid.DO NOT WRITE IN ANY BARCODES.Answer all questions.Electronic calculators may be used.You may lose marks if you do not show your working or if you do not use appropriate units.At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question.CHEMISTRY0620/63Paper 6 Alternative to PracticalOctober/November 20161 hourCandidates answer on the Question Paper.No Additional Materials are required.Cambridge International ExaminationsCambridge International General Certificate of Secondary EducationThe syllabus is approved for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate.(a)C omplete the boxes to name the apparatus. [2](b)W hat is the purpose of the mineral wool?.................................................................................................................................................... (1)(c)G ive a test to show the presence of alkenes.test .............................................................................................................................................result ..........................................................................................................................................[2](d)W hy must the delivery tube be removed from the water when the heating is stopped? (1)[Total: 6]© UCLES 20160620/63/O/N/160620/63/O/N/16© UCLES 2016BLANK PAGE[Turn over0620/63/O/N/16© UCLES 20162 A student investigated what happened when two different metals, iron and magnesium, reactedwith aqueous copper(II ) sulfate. T wo experiments were carried out. (a) Experiment 1Ameasuring cylinder was used to pour 25 cm 3 of aqueous copper(II ) sulfate into a polystyrene cup. The initial temperature of the solution was measured, then again at 30 seconds and at 60 seconds.A t 60 seconds, the iron was added to the aqueous copper(II ) sulfate and the mixture stirred continuously with a thermometer.T he temperature of the mixture was measured every 30 seconds for 300 seconds (5 minutes).U se the thermometer diagrams to record the results in the table.[2](b) E xperiment 2Experiment 1 was repeated using magnesium instead of iron.Use the thermometer diagrams to record the results in the table.[2]0620/63/O/N/16© UCLES 2016[Turn over(c) P lot the results for Experiments 1 and 2 on the grid and draw two smooth line graphs.C learly label the graphs.8070605040302010060120180time / stemperature / °C240300360[4](d) (i) F rom your graph , deduce the temperature of the mixture in Experiment 1 after135 seconds.S how clearly on the grid how you worked out your answer.………….…………………… °C [2](ii) F rom your graph , deduce the time taken for the temperature of the mixture in Experiment 2 to change by 30 °C after the magnesium was added .S how clearly on the grid how you worked out your answer...………………………………. s [2](e)P redict the temperature of the mixture in Experiment 2 after one hour. Explain your answer..................................................................................................................................................... (2)(f)S uggest an advantage of taking the temperature readings every 15 seconds..................................................................................................................................................... (2)(g)E xplain why a polystyrene cup is used in the experiments and not a copper can..................................................................................................................................................... (2)[Total: 18]© UCLES 20160620/63/O/N/163T wo solutions, solution Q and solution R, were analysed. Solution Q was aqueous sulfuric acid.tests on solution Q(a)S olution Q was divided into four equal portions in four test-tubes. The following tests werecarried out.C omplete the observations for tests 1– 4.(i)test 1T he pH of the first portion of solution Q was measured.pH (1)(ii) t est 2M agnesium ribbon was added to the second portion of solution Q. The gas given off wastested.observations ....................................................................................................................... (3)(iii)test 3S odium carbonate was added to the third portion of solution Q. The gas given off wastested.observations ....................................................................................................................... (3)(iv)test 4D ilute nitric acid and aqueous barium nitrate were added to the fourth portion of solution Q.observations (1)© UCLES 2016[Turn over0620/63/O/N/16tests on solution RS olution R was divided into three equal portions in three test-tubes.T he following tests were carried out.tests observations test 5The pH of the first portion of solution R wasmeasured.pH = 10test 6Drops of aqueous sodium hydroxide wereadded to the second portion of solution R andthe test-tube shaken.Excess aqueous sodium hydroxide was then added to the test-tube.white precipitate no visible changetest 7A queous iron(II) sulfate was added to the thirdportion of solution R and the mixture shaken.green precipitate formed(b)I dentify solution R..................................................................................................................................................... (2)[Total: 10]0620/63/O/N/16© UCLES 20160620/63/O/N/16© UCLES 2016[Turn over4A liquid cleaner is a mixture of three substances. These substances are shown in the table.name of substanceproperties of substance water liquid, boiling point 100 °C sodium carbonatesolid, soluble in water silicasolid, insoluble in waterPlan an experiment to obtain separate pure samples of each substance from the mixture in the liquid cleaner. You are provided with common laboratory apparatus............................................................................................................................................................ ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... (6)[Total: 6]BLANK PAGE © UCLES 20160620/63/O/N/16Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity.To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge International Examinations Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at after the live examination series.Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.。

九天国际教育GCSE真题June 2013 (v3) QP - Paper 1 CIE Chemistry IGCSE

九天国际教育GCSE真题June 2013 (v3) QP - Paper 1 CIE Chemistry IGCSE

This document consists of 15 printed pages and 1 blank page.IB13 06_0620_13/FP© UCLES 2013[Turn over*3600035500*UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary EducationCHEMISTRY 0620/13Paper 1 Multiple Choice May/June 201345 MinutesAdditional Materials: Multiple Choice Answer Sheet Soft clean eraserSoft pencil (type B or HB is recommended)READ THESE INSTRUCTIONS FIRSTWrite in soft pencil.Do not use staples, paper clips, highlighters, glue or correction fluid.Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you.DO NOT WRITE IN ANY BARCODES.There are forty questions on this paper. Answer all questions. For each question there are four possible answers A , B , C and D .Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet.Read the instructions on the Answer Sheet very carefully.Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Periodic Table is printed on page 16. Electronic calculators may be used.© UCLES 2013 0620/13/M/J/131 The diagram shows a cup of tea.Wh ich row describes th e water particles in th e air above th e cup compared with th e water particles in the cup?moving fastercloser togetherA B C D2 Crystals of sodium chloride were prepared by the following method.1 25.0 cm 3 of dilute hydrochloric acid was accurately measured into a conical flask.2 Aqueous sodium hydroxide was added until the solution was neutral. The volume of sodium hydroxide added was measured.3The solution was evaporated and the crystals washed with approximately 15 cm 3 of water.Which row shows the pieces of apparatus used to measure the 25.0 cm 3 of hydrochloric acid, the volume of aqueous sodium hydroxide and the 15 cm 3 of water?25.0 cm3 of hydrochloricacid accuratelythe volume of aqueous sodium hydroxide added15 cm 3 of water approximatelyA burette pipette measuring cylinderB measuring cylinderburettepipetteC pipette burette measuring cylinder Dpipette measuring cylinder burette© UCLES 2013 0620/13/M/J/13[Turn over3 The positions of four elements are shown on the outline of the Periodic Table. Which element forms a coloured oxide?ABCD4 Lead iodide is insoluble in water.Lead iodide is made by adding aqueous lead nitrate to aqueous potassium iodide.Which pieces of apparatus are needed to obtain solid lead iodide from 20 cm 3 of aqueous lead nitrate?12345A 1, 2 and 4B 1, 3 and 5C 1, 4 and 5D 2, 4 and 55 Element X is represented by X 2713.Which statement about element X is correct?A An atom of X contains 13 protons and 13 neutrons.B An atom of X contains 27 protons and 13 electrons. CX forms an ion by gaining electrons.D X is placed in Group III of the Periodic Table.© UCLES 2013 0620/13/M/J/136 Element X has six electrons in its outer shell.= electronkeyeHow could the element react?A by gaining two electrons to form a positive ionB by losing six electrons to form a negative ionC by sharing two electrons with two electrons from another element to form two covalent bondsD by sharing two electrons with two electrons from another element to form four covalent bonds 7 For which substance is the type of bonding not correct?type of bondingsubstanceionic covalent metallicAc h lorineB potassium bromideC sodiumD sodium chloride8 A compound with the formula XF 2 has a relative formula mass of 78.What is element X? A argon B calcium C neonD zirconium9The diagram shows an incomplete circuit.Which substance causes the lamp to light when added to the glass tube?A aqueous sodium chlorideB aqueous sugarC solid sodium chlorideD solid sugar10 The diagram shows an electrical cable.metal coreWhich statement about the substances used is correct?A The coating is plastic because it conducts electricity well.B The core is copper because it conducts electricity well.C The core is copper because it is cheap and strong.D The core is iron because it is cheap and strong.11What is the balanced chemical equation for the reaction between calcium and water?A Ca + H2O → CaOH + H2B Ca + H2O → Ca(OH)2 + H2C Ca + 2H2O → CaOH + H2D Ca + 2H2O → Ca(OH)2 + H2© UCLES 2013 0620/13/M/J/13 [Turn overII) sulfate powder is put into a beaker of water and stirred.What would show that the process was exothermic?A A blue solution is formed.B The beaker feels cooler.C The beaker feels warmer.D The powder dissolves in the water.13 The diagram shows an electrolysis circuit.At which electrode is hydrogen formed?sodium chloride sodium chloride14Which substance does not require oxygen in order to produce energy?A coalB hydrogenC natural gasD 235U15Calcium carbonate reacts with hydrochloric acid to form carbon dioxide.Which changes would slow this reaction down?1 decreasing the concentration of hydrochloric acid2 decreasing the particle size of calcium carbonate3 decreasing the temperatureA 1 and 2 onlyB 1 and 3 onlyC 2 and 3 only D1, 2 and 3© UCLES 2013 0620/13/M/J/13© UCLES 2013 0620/13/M/J/13[Turn over16 The equation shows the formation of anhydrous copper(II ) sulfate from hydrated copper(II )sulfate.CuSO 4.5H 2O CuSO 4 + 5H 2OStatements 1, 2 and 3 refer to this reaction.1 Hydrated copper(II ) sulfate is reduced to anhydrous copper(II ) sulfate.2 The (II ) in the name copper(II ) sulfate refers to the oxidation state of the metal. 3The reaction is reversible.Which statements are correct?A 1 onlyB 1 and 2C 2 and 3D 3 only17 Ant stings hurt because of the methanoic acid produced by the ant.Which substance could, most safely , be used to neutralise the acid?substance pH A baking soda 8 B car battery acid 1 C lemon juice 3 Doven cleaner1418 In which equation is the underlined substance acting as a reducing agent?A 3CO + Fe 2O 3 → 2Fe + 3CO 2B CO 2 +C → 2CO C CuO + H 2 → Cu + H 2OD CaO + H 2O → Ca(OH)2© UCLES 2013 0620/13/M/J/13and in alkaline solutions.indicator acidalkali bromophenol blueyellow blue Congo redvioletredA few drops of each indicator are added to separate samples of a solution of pH 2.What are the colours of the indicators in this solution?in a solution of pH 2bromophenol blue isCongo red isA blue redB blue violetC yellow red Dyellow violet20 The diagram shows an experiment.redlitmus paperaqueous+aqueoussodium hydroxideWhat happens to the pieces of litmus paper?blue litmus paper red litmus paper A changes colour changes colour B changes colour no colour change C no colour change changes colour D no colour changeno colour change21The diagram shows one period of the Periodic Table.Li Be B C NO F Ne Which two elements form acidic oxides?A carbon and lithiumB carbon and neonC carbon and nitrogenD nitrogen and neon22Which element is a transition metal?colour of chloride melting point of element/°CA white 113B white 1495C yellow 113D yellow 149523Which property of elements increases across a period of the Periodic Table?A metallic characterB number of electron shellsC number of outer shell electronsD tendency to form positive ions24Which property makes aluminium ideal for making food containers?A conducts electricityB conducts heatC mechanical strengthD resistance to corrosion© UCLES 2013 0620/13/M/J/13 [Turn over© UCLES 2013 0620/13/M/J/1325 Fluorine is at the top of Group VII in the Periodic Table.Which row shows the properties of fluorine?colourstate at roomtemperature reaction with aqueous potassium iodideA brown gas no reactionB brown liquid iodine displacedC yellow gas iodine displaced Dyellow liquid no reaction26 Which element is a metal?charge on element ionelectrical conductivityA negative lowB positive highC negative high Dpositive low27 Group I metals are also known as the Alkali Metals.Which statement about the metals in Group I is not correct?A In their reactions they lose electrons.B Their atoms all have one electron in their outer shell.C They form +1 ions in their reactions with non-metals.D They form covalent compounds by sharing electrons.28Below are some metals in decreasing order of reactivity.magnesiumzincironcopperTitanium reacts with acid and cannot be extracted from its ore by heating with carbon.Where should titanium be placed in this list?A below copperB between iron and copperC between magnesium and zincD between zinc and iron29Which substance is not involved in the extraction of iron from hematite?A carbonB carbon monoxideC calcium carbonateD nitrogen30Pure metals conduct electricity and can be hammered into different shapes.Why are metals sometimes used as alloys?A Alloys are cheaper than the metals they are made from.B Alloys are easier to hammer into different shapes.C Alloys are harder and keep their shape better.D Alloys conduct electricity better.31Water has been contaminated with sea-water.Which substances can be removed by chlorination and filtration?A bacteria, sand and sodium chlorideB bacteria and sand onlyC bacteria and sodium chloride onlyD sand and sodium chloride only32 Which information about carbon dioxide and methane is correct?carbon dioxide methaneA formed when vegetation decomposes keyB greenhouse gas = trueC present in unpolluted air = falseDproduced during respiration33 Iron rusts when it reacts with ……1……Rusting can be prevented by covering the iron with a more reactive metal, such as ……2……Which words correctly complete gaps 1 and 2?1 2A oxygen copperB oxygen magnesiumC oxygen and water copper Doxygen and watermagnesium34 Nitrogen, phosphorus and potassium are essential elements for plant growth.Which mixture provides all three essential elements?mixtureformula Aammonium phosphate+potassium chloride (NH 4)3PO 4+ KC l Bammonium phosphate+ammonium nitrate (NH 4)3PO 4+ NH 4NO 3 Cammonium phosphate+ammonium chloride (NH 4)3PO 4+ NH 4C l Dammonium nitrate+potassium chlorideNH 4NO 3+ KC l35 Organic compounds may have names ending in -ane, -ene, -ol or -oic acid.How many of these endings indicate the compounds contain double bonds in their molecules? A 1 B 2 C 3 D 436 The list shows four methods that were suggested for the formation of carbon dioxide.1 action of an alkali on a carbonate2 action of heat on a carbonate3 complete combustion of methane 4reaction of a carbonate with oxygenWhich methods would result in the production of carbon dioxide?A 1 and 2B 1 and 4C 2 and 3D 3 and 437 The table shows the boiling points of four members of the homologous series of alcohols.compoundname formula boiling point/ °Cmethanol CH 3O H 65 ethanol C 2H 5O H 78 propanol C 3H 7O H X butanol C 4H 9O H 117What is the value of X?A 55 °CB 82 °C C 98 °CD 115 °C38 Which columns describe the hydrocarbons ethane and ethene?1 2 3 4 state at room temperature gas gas liquid liquid reaction with oxygen burns burns burns burns reaction with aqueous bromineno reactiondecolourises bromineno reactiondecolourises bromineA 1 (ethane) and 2 (ethene)B 1 (ethane) and 4 (ethene)C 2 (ethene) and 3 (ethane)D 3 (ethane) and 4 (ethene)39The table shows some fractions that are obtained from petroleum by fractional distillation, together with some of their uses.fraction userefinery gas cookinggasoline fuel for cars1 makingchemicalsfuel2 jet3 fuel for shipsroadsbitumen makingWhich row correctly identifies fractions 1, 2 and 3?1 2 3A diesel oil fuel oil lubricating fractionB fuel oil diesel oil keroseneoilC kerosene naphtha dieseloilD naphtha kerosene fuel40 Which of the statements about ethanol are correct?1 Ethanol can be formed by an addition reaction.2 Ethanol can be formed by fermentation.3 When ethanol burns in air, it forms carbon dioxide and water.A 1, 2 and 3B 1 and 2C 1 and 3D 2 and 3BLANK PAGE16Per mission to r epr oduce items wher e thir d-par ty owned mater ial pr otected by copyr ight is included has been sought and clear ed wher e possible. Ever y reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity.University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. G r ou p140C eC e r i u m 58141P rP r a s e o d y m i u m 59144N d N e o d y m i u m 60P mP r o m e t h i u m61150S mS a m a r i u m62152E uE u r o p i u m63157G dG a d o l i n i u m64159T bT e r b i u m65162D yD y s p r o s i u m66165H oH o l m i u m67167E rE r b i u m68169T mT h u l i u m69173Y bY t t e r b i u m70175L uL u t e t i u m71232T hT h o r i u m 90P aP r o t a c t i n i u m 91238UU r a n i u m92N pN e p t u n i u m93P uP l u t o n i u m94A mA m e r i c i u m95C mC u r i u m96B kB e r k e l i u m97C fC a l i f o r n i u m98E sE i n s t e i n i u m99F mF e r m i u m100M dM e n d e l e v i u m101N oN o b e l i u m102L rL a w r e n c i u m1031HH y d r o g e n17L iL i t h i u m 323N aS o d i u m 1124M gM a g n e s i u m1240C aC a l c i u m 2045S c S c a n d i u m 2148T i T i t a n i u m2251V V a n a d i u m 2352C r C h r o m i u m 2455M n M a n g a n e s e 2556F e I r o n 2659C o C o b a l t 2759N i N i c k e l 2864C u C o p p e r 2965Z n Z i n c3070G aG a l l i u m3127A l A l u m i n i u m1311B B o r o n 512C C a r b o n614NN i t r o g e n716OO x y g e n819FF l u o r i n e928S iS i l i c o n1431PP h o s p h o r u s1532SS u l f u r1635.5C lC h l o r i n e1740A rA r g o n1820N eN e o n104H eH e l i u m273G eG e r m a n i u m3275A sA r s e n i c3379S eS e l e n i u m3480B rB r o m i n e3584K rK r y p t o n3639KP o t a s s i u m 1988S rS t r o n t i u m 3889Y Y t t r i u m 3991Z r Z i r c o n i u m4093N b N i o b i u m 4196M o M o l y b d e n u m 42T c T e c h n e t i u m 43101R u R u t h e n i u m 44103R h R h o d i u m 45106P d P a l l a d i u m 46108A g S i l v e r47112C dC a d m i u m48115I nI n d i u m49119S nT i n50122S bA n t i m o n y51128T eT e l l u r i u m52127II o d i n e53131X eX e n o n54137B aB a r i u m 56139L a L a n t h a n u m 57*178H fH a f n i u m72181T a T a n t a l u m 73184W T u n g s t e n 74186R e R h e n i u m 75190O s O s m i u m 76192I rI r i d i u m 77195P t P l a t i n u m78197A uG o l d79201H gM e r c u r y80204T lT h a l l i u m81207P bL e a d82209B iB i s m u t h83P oP o l o n i u m84A tA s t a t i n e85R nR a d o n86F rF r a n c i u m 87227A cA c t i n i u m899B eB e r y l l i u m4II I I I II V V V I V I I 085R bR u b i d i u m 37133C sC a e s i u m 55226R a R a d i u m 88T h e v o l u m e o f o n e m o l e o f a n y g a s i s 24d m 3a t r o o m t e m p e r a t u r e a n d p r e s s u r e (r .t .p .).a Xb a = r e l a t i v e a t o m ic m a s sX = a t o m i c s y m b o lb = p r o t o n (a t o m ic ) n u m b e rK e y *58-71 L a n t h a n o i d s e r i e s 90-103 A c t i n o i d s e r i e s D A T A S H E E T T h e P e r i o d i c T a b l e o f t h e E l e m e n t sPMT。

九天国际教育GCSE真题November 2010 (v3) QP - Paper 6 CIE Chemistry IGCSE

九天国际教育GCSE真题November 2010 (v3) QP - Paper 6 CIE Chemistry IGCSE

READ THESE INSTRUCTIONS FIRSTWrite your Centre number, candidate number and name on all the work you hand in.Write in dark blue or black pen.You may use a pencil for any diagrams, graphs or rough working.Do not use staples, paper clips, highlighters, glue or correction fl uid.DO NOT WRITE IN ANY BARCODES.Answer all questions.At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question.CHEMISTRY0620/63Paper 6 Alternative to PracticalOctober/November 20101 hourCandidates answer on the Question Paper.No Additional Materials are required.UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certi fi cate of Secondary EducationThis document consists of 11 printed pages and 1blank page.[Turn overIB10 11_0620_63/3RP © UCLES 2010*2908924238*For Examiner’s Use 345Total67120620/63/O/N/10© UCLES 2010For Examiner’sUse°C) and octane (b.p. 126 °C)(a) (i) N ame this method of separation. (1)(ii) N ame the pieces of apparatus labelledA ................................................................................................................................B (2)(b) W hy would an electric heater be used rather than a fl ame for heating this mixture? (1)(c) W hich of the two alkanes would be collected fi rst at C ? (1)(d) H ow would the student know when the second alkane began to be collected? (1)[Total: 6]0620/63/O/N/10© UCLES 2010[Turn overForExaminer’sUse2T he notes below show the steps taken by a student to prepare crystals of hydrated nickel nitrate, Ni(NO 3)2.6H 2O.Step 1 P lace 25 cm 3 of dilute nitric acid in a beaker.Step 2 A dd nickel carbonate powder to the beaker until it is in excess. Step 3 S eparate the solution of nickel nitrate from the mixture. Step 4H eat the solution to obtain crystals of hydrated nickel nitrate.(a) (i) Name the piece of apparatus used to measure the nitric acid in Step 1. (1)(ii) W hy is it not necessary to heat the dilute nitric acid before adding the nickelcarbonate? (1)(b) H ow would the student know when excess nickel carbonate was present in Step 2? (1)(c) D raw a diagram to show the separation method used in Step 3.[2](d) H ow could the student make sure a good sample of crystals was obtained when carryingout Step 4? Explain your answer............................................................................................................................................ ........................................................................................................................................... (2)[Total: 7]0620/63/O/N/10© UCLES 2010For Examiner’sUseeter investigated the temperature change when 0.5 g of zinc powder was added to 50 cm 3T he experiment was repeated three times using different masses of zinc powder. The initialtemperature of the copper sulfate solution was the same in each experiment.zinc powderT he thermometer diagrams show the highest temperature reached.3530250.5 g zinc3530251.0 g zinc3530251.5 g zinc3530252.0 g zinc(a) U se the thermometer diagrams to complete the table of results.Table of resultsmass of zinc / ginitialtemperature / °Chighest temperature / °Ctemperature rise / °C0.5211.0211.5212.021[2]0620/63/O/N/10© UCLES 2010[Turn overForExaminer’sUse(b) P lot the results on the grid below and connect the points with straight lines.12108642000.51.01.52.02.5temperaturerise / °Cmass of zinc / g[3](c) (i) U se your graph to fi nd the mass of zinc required to produce a temperature rise of6.0 °C. Show clearly on the grid how you obtained your answer. (2)(ii) S uggest why the temperature rise was the same in the last two experiments. (1)(d) S ketch on the grid the graph you would expect if the experiments were repeated usingthe same masses of magnesium powder. [2][Total: 10]0620/63/O/N/10© UCLES 2010ForExaminer’sUse4(a) A student investigated the reaction between dilute hydrochloric acid and two differentalkaline solutions, F and G .T wo experiments were carried out. Experiment 1A burette was fi lled up to the 0.0 cm 3 mark with dilute hydrochloric acid.U sing a measuring cylinder, 25 cm 3 of solution F was placed into a conical fl ask with a few drops of phenolphthalein indicator.T he hydrochloric acid was added to the fl ask until the colour of the phenolphthalein changed. Use the burette diagram to record the fi nal volume in the table of results.Experiment 2E xperiment 1 was repeated using solution G .Use the burette diagrams to record the volumes and complete the table of results.initialfinalTable of resultsburette readings / cm 3experiment 1experiment 2fi nal reading initial readingdifference[4]For(b)W hich ion is present in all alkaline solutions?Examiner’sUse (1)(c)(i)I n which Experiment was the greatest volume of hydrochloric acid used? (1)(ii)C ompare the volumes of hydrochloric acid used in Experiments 1 and 2. (1)(iii)S uggest explanations for the difference in volumes......................................................................................................................................................................................................................................................................... (2)(d)P redict the volume of hydrochloric acid which would be needed to react completely with12.5cm3 of solution G. Explain your answer............................................................................................................................................ (3)(e)(i)S tate two sources of error in the experimental procedure.1.................................................................................................................................2. (2)(ii)S uggest two improvements to reduce the sources of error in the experimental procedure.1.................................................................................................................................2. (2)[Total: 16]© UCLES 2010[Turn over0620/63/O/N/100620/63/O/N/10© UCLES 2010For Examiner’sUse5 T wo salts, W and X , were analysed. X was iron(II ) chloride.The tests on each salt, and some of their observations, are in the following table.Complete the observations in the table.testsobservationstests on salt W(a) A little of W was heated in a test-tube. Any gas given off was tested with damp pH indicator paper.a white solid formed at the top of thetest-tube pungent gas evolved, pH 8-10(b) W was dissolved in distilled water in atest-tube.T he solution was divided into three portions in test-tubes and the following tests carried out.(i) T o the fi rst portion, dilute hydrochloricacid was added and then aqueous barium chloride.(ii) T o the second portion, dilute nitricacid was added and then aqueous silver nitrate.(iii) T o the third portion, aqueous sodiumhydroxide was added. The mixture was heated and any gases given off were tested with damp pH indicator paper.white precipitateno visible reactionpungent gas evolved, pH 8-10tests on salt X(c) A ppearance of salt X .(d) S alt X was dissolved in distilled water ina test-tube. The solution was divided into two portions.(i) T o the fi rst portion, excess aqueoussodium hydroxide was added.(ii) T o the second portion, a few dropsof nitric acid was added followed by aqueous silver nitrate. (1)........................................................................................................................................ [2]. (2)For(e)I dentify the gas given off in tests (a) and (b)(iii).Examiner’sUse (1)(f)W hat conclusions can you draw about salt W?...................................................................................................................................................................................................................................................................................... (3)[Total: 9]© UCLES 2010[Turn over0620/63/O/N/100620/63/O/N/10© UCLES 2010For Examiner’sUseexcess hydrogen hydrogen(a) E xplain why powdered copper oxide was used and not lumps of copper oxide............................................................................................................................................ (2)(b) T he copper oxide changed colour from black to (1)(c) W hat caused the colourless liquid to form in the U-tube? (1)(d) G ive a chemical test that could be carried out on the colourless liquid to show thepresence of water.test ...................................................................................................................................result (2)[Total: 6]11For7T he label shows the substances present in a bottle of orange fruit drink.Examiner’sUseORANGE FRUIT DRINKContains: orange juice, malic acid, citric acidand natural colours (carotenes)NO ARTIFICIAL COLOURS (E NUMBERS)(a)A piece of pH indicator paper was dipped in the drink.(i)P redict the pH value obtained. (1)(ii)W hy does the pH indicator paper give a more reliable result than adding Universal Indicator solution to the drink?.................................................................................................................................... (1)(b)D escribe an experiment you could carry out to show that only natural colours werepresent in the drink.A space has been left if you want to draw a diagram to help you answer the question............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. (4)[Total: 6]Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included the publisher will be pleased to make amends at the earliest possible opportunity.University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.12BLANK PAGE。

九天国际教育GCSE真题June 2013 QP - Unit 3 (F) OCR Chemistry (A) GCSE

九天国际教育GCSE真题June 2013 QP - Unit 3 (F) OCR Chemistry (A) GCSE

INSTRUCTIONS TO CANDIDATES •Write your name, centre number and candidate number in the boxes above. Please write clearly and in capital letters.• Use black ink. HB pencil may be used for graphs and diagrams only.• Answer all the questions.• Read each question carefully. Make sure you know what you have to do before startingyour answer.• Write your answer to each question in the space provided. Additional paper may beused if necessary but you must clearly show your candidate number, centre number and question number(s).• Do not write in the bar RMATION FOR CANDIDATES • Y our quality of written communication is assessed in questions marked with a pencil ( ).• The number of marks is given in brackets [ ] at the end of each question or part question.• The total number of marks for this paper is 60.• This document consists of 20 pages. Any blank pages are indicated.•The Periodic T able is printed on the back page.OCR is an exempt CharityTurn over© OCR 2013 [Y/601/7593]DC (CW/SW) 65563/6*A 137240613*© OCR 2013Answer all the questions.1 Peter is testing the food colourings in soft drinks made by different companies. He wants to find out if any of these drinks contain banned food colourings. Peter uses chromatography.Here is a diagram of the chromatogram from soft drink A .6543210 cmrulersolvent frontoriginspot 1spot 2spot 3(a) Use the ruler on the diagram. Work out the Rf value for spot 3 on this chromatogram.Use the formula in the box.distance travelled by spotRf =distance travelled by solventShow your working.Rf value for spot 3 = (2)Peter tests five soft drinks.(b)Write your Rf value for spot 3 of soft drink A in the table with the others.Soft drink Rf value spot 1Rf value spot 2Rf value spot 3A0.210.50B0.380.650.72C0.380.720.88D0.290.650.82E0.380.440.65Peter does a chromatogram of the banned food colouring.He finds that it gives two spots, with Rf values 0.38 and 0.65.Which of the soft drinks contain the banned food colouring? (2)answer Peter does another chromatogram of the banned food colouring.(c)This time he uses alcohol instead of water as the solvent.The table shows his results.Solvent Rf values for spotswater0.38 and 0.65alcohol0.25 and 0.90He writes this conclusion.Both of the dyes in the food colouring move further when alcohol is used.Do you think Peter’s conclusion is correct? Explain your reasoning.......................................................................................................................................................................................................................................................................................................................................................................................................................................................... (2)[Total: 6]Turn over © OCR 2013© OCR 20132Look at the formulae of these five organic compounds.BC H H H HOHHC C H H H HHHC C C H H H HBrHC DE C H HHCH AC HHHOOH CUse the letters A , B , C , D and E to answer the questions.(a) Which compound is a saturated hydrocarbon? answer ................. [1] (b) Which compound is an unsaturated hydrocarbon?answer (1)(c) Which two compounds react with each other to make an ester?answer ................. and .. (2)(d) Which compound is a weak acid?answer (1)[Total: 5]3 Ammonia, NH, is made by the Haber process.3nitrogen + hydrogen ammoniaThe Haber process uses:(a)catalyst• a• a temperature of 450 °Cpressurehigh• a• recycling of unreacted gases.Explain how these help to make more ammonia.The quality of written communication will be assessed in your answer............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ (6)Turn over © OCR 2013© OCR 2013(b)Look at the bar chart.ammoniaproduction in millions of tonsyearWorld production of ammoniaThe main use of ammonia is to make fertilisers.Large scale use of fertilisers made from ammonia causes environmental problems.Write about these problems, and explain why they have got worse over the last 60 years (3)[Total: 9]4 Citric acid reacts with sodium hydrogencarbonate.citric acid + sodium hydrogencarbonateThe diagram shows the energy change that takes place in this reaction.course of reactionWrite the names of the reactants and the products of the reaction in the correct places on this (a)diagram. [2] Finish these sentences to describe what happens in the reaction.(b)Use words or phrases from the list.endothermicexothermicgained fromlesslost tomoreThe reactants have ........................................ energy than the products, so during thereaction, energy is ........................................ the surroundings.The reaction is ........................................ . [3]Turn over © OCR 2013(c)A solution of citric acid is added to a solution of sodium hydrogencarbonate in a test tube.Sam says that the solution will bubble and the tube will get hot.Sally says that there will be no bubbles and the tube will get cold.Both are wrong. Explain why....................................................................................................................................................................................................................................................................................................... (2)[Total: 7]© OCR 20135 Titration is a technique used for quantitative analysis.(i) Describe the general procedure for carrying out an acid-base titration and explain the (a)purpose of each step.The quality of written communication will be assessed in your answer.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... (6)Turn over © OCR 2013(ii) How can the uncertainty in a set of repeated titration results be assessed?................................................................................................................................................................................................................................................................................................................................................................................................................................. (2)(b)Emma works for a company making indigestion tablets.Her job is to test tablets from each batch.(i) The tablets contain magnesium hydroxide.Emma titrates each tablet with hydrochloric acid.This reaction makes a salt and water.Finish this word equation for the reaction.......................... .................................................. .........................magnesium hydroxide +hydrochloricacid+[1](ii) Work out the relative formula mass (RFM) of magnesium hydroxide, Mg(OH)2.Showyourworking.(Relative atomic masses: H = 1; Mg = 24; O = 16)RFM of magnesium hydroxide = (1)© OCR 2013(iii) Emma uses hydrochloric acid with 73.0 g of hydrogen chloride in each 1.0 dm 3 of theacid solution. It takes 15.1 cm 3 of this hydrochloric acid to react with the tablet.Look at the formula in the box.mass in 1.0 dm 3mass of hydrogen chloride = volume in cm 3 ×1000Use the formula to work out the mass of hydrogen chloride in 15.1 cm 3 of this hydrochloric acid.Give your answer to the nearest 0.1 g.Show your working.mass of hydrogen chloride in 15.1 cm 3 solution = ...................................................... g [2](iv) Look at the formula in the box below.RFM Mg(OH)2mass of Mg(OH)2 = mass of hydrogen chloride in 15.1 cm 3 solution × 73Use this formula, and your answers to (ii) and (iii), to work out the mass of magnesiumhydroxide in the tablet.Show your working.mass of magnesium hydroxide in the tablet = ...................................................... g [2](c)Emma analyses six tablets from each batch.The table shows Emma’s results for four batches of tablets.Mass of magnesium hydroxide in gTablet number1st2nd3rd4th5th6thBatch A0.950.930.950.960.940.93Batch B0.880.860.890.870.890.87Batch C 1.13 1.16 1.14 1.15 1.13 1.16Batch D 1.03 1.13 1.05 1.04 1.15 1.03The label on each pack of indigestion tablets says that each tablet contains 1.0 g of magnesium hydroxide.The standard set by the company is that each tablet must be within 0.1 g of this figure.For each batch decide whether it meets the standard and explain your answers...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... (4)[Total: 18]6 Methanol has the formula CH3OH.(a)(i) This is the structural (displayed) formula for methane, CH4.CHHH HDraw the structural (displayed) formula for methanol, CH3OH.[1](ii) To which type of organic compound does methanol belong?Put a ring around the correct answer.alcoholalkanecarboxylic acidester[1] (b)Methanol burns to make carbon dioxide and water.CH3OH + 3O22+ 2H2OFinish this table to show the number of molecules of each chemical in the equation.methanol oxygen carbon dioxide water number of moleculesin the equation[2](c)Give a use of methanol. (1)[Total: 5]7 Ethanol can be made by the reaction of ethene with steam or by fermentation of sugar. Method1 – reaction of ethene with steam:C 2H4+ H2O C2H5OHethene steam ethanol Ethene is obtained from crude oil.The ethene is reacted with steam at about 300 °C and 60 atmospheres pressure. Method2 – fermentation:C 6H12O62H5OH + 2CO2sugar ethanolcarbondioxideThe sugar is obtained from crops such as sugar beet or sugar cane.The sugar is fermented with yeast at a temperature of about 30 °C.(a)The sustainability of chemical processes depends on a number of factors.One of these factors is the renewability of raw materials.Consider this, and other factors, to compare the sustainability of making ethanol by these two methods.The quality of written communication will be assessed in your answer............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ (6)Fermentation makes a solution containing less than 20% of ethanol.(b)(i) Which of these statements explains why it is not possible to make a more concentratedsolution?Put a tick (✓) in the box next to the best statement.Y east stops making ethanol when it runs out of sugar.The reaction is too slow at 30 °C.Y east is killed by a high concentration of ethanol.T oo much carbon dioxide is made.[1](ii) What process is used to concentrate the ethanol solution?Put a ring around the correct answer.crystallisation distillation filtration reduction[1] The reaction of ethene with steam is carried out at about 300 °C.(c)Fermentation is carried out at about 30 °C.Suggest reasons for this difference................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ (2)[Total: 10]END OF QUESTION PAPERPLEASE DO NOT WRITE ON THIS PAGEPLEASE DO NOT WRITE ON THIS PAGEPLEASE DO NOT WRITE ON THIS PAGEPLEASE DO NOT WRITE ON THIS PAGECopyright InformationOCR is committed to seeking permission to reproduce all third-party content that it uses in its assessment materials. OCR has attempted to identify and contact all copyright holders whose work is used in this paper. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced in the OCR Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download from our public website () after the live examination series.If OCR has unwittingly failed to correctly acknowledge or clear any third-party content in this assessment material, OCR will be happy to correct its mistake at the earliest possible opportunity.For queries or further information please contact the Copyright Team, First Floor, 9 Hills Road, Cambridge CB2 1GE.OCR is part of the Cambridge Assessment Group; Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.T h e P e r i o d i c T a b l e o f t h e E l e m e n t s* T h e l a n t h a n o i d s (a t o m i c n u m b e r s 58-71) a n d t h e a c t i n o i d s (a t o m i c n u m b e r s 90-103) h a v e b e e n o m i t t e d .T h e r e l a t i v e a t o m i c m a s s e s o f c o p p e r a n d c h l o r i n e h a v e n o t b e e n r o u n d e d t o t h e n e a r e s t w h o l e n u m b e r .12345670K e y1H h y d r o g e n 14H eh e l i u m27L il i t h i u m39B eb e r y l l i u m4r e l a t i v e a t o m i c m a s s a t o m i c s y m b o ln a m e a t o m i c (p r o t o n ) n u m b e r 11Bb o r o n512Cc a r b o n 614N n i t r o g e n716O o x y g e n819Ff l u o r i n e920N en e o n1023N as o d i u m1124M gm a g n e s i u m1227A la l u m i n i u m1328S is i l i c o n1431Pp h o s p h o r u s 1532Ss u l f u r 1635.5C lc h l o r i n e 1740A ra r g o n1839Kp o t a s s i u m1940C ac a l c i u m2045S cs c a n d i u m2148T it i t a n i u m2251Vv a n a d i u m2352C rc h r o m i u m2455M n m a n g a n e s e 2556F ei r o n2659C o c o b a l t 2759N i n i c k e l 2863.5C uc o p p e r 2965Z n z i n c 3070G ag a l l i u m3173G eg e r m a n i u m 3275A sa r s e n i c 3379S es e l e n i u m 3480B rb r o m i n e 3584K rk r y p t o n3685R br u b i d i u m3788S rs t r o n t i u m3889Yy t t r i u m3991Z rz i r c o n i u m4093N bn i o b i u m4196M om o l y b d e n u m42[98]T c t e c h n e t i u m 43101R ur u t h e n i u m44103R hr h o d i u m 45106P dp a l l a d i u m46108A gs i l v e r 47112C dc ad m i u m48115I ni n d i u m 49119S nt i n50122S ba n t i m o n y51128T et e l l u r i u m52127Ii o d i n e53131X ex e n o n54133C sc a e s i u m55137B ab a r i u m56139L a *l a n t h a n u m57178H fh a f n i u m72181T at a n t a l u m73184Wt u n g s t e n74186R er h e n i u m75190O so s m i u m 76192I r i r i d i u m 77195P tp l a t i n u m78197A ug o l d79201H gm e r c u r y 80204T l t h a l l i u m 81207P bl e a d82209B ib i s m u t h83[209]P op o l o n i u m 84[210]A ta s t a t i n e85[222]R nr a d o n86[223]F rf r a n c i u m 87[226]R ar a d i u m 88[227]A c *a c t i n i u m 89[261]R f r u t h e r f o r d i u m104[262]D bd u b n i u m105[266]S gs e a b o r g i u m106[264]B hb o h r i u m 107[277]H s h a s s i u m 108[268]M t m e i t n e r i u m109[271]D sd a r m s t a d t i u m110[272]R g r o e n t g e n i u m111E l e m e n t s w i t h a t o m i c n u m b e r s 112-116 h a v e b e e n r e p o r t e d b u t n o t f u l l y a u t h e n t i c a t e d。

九天国际教育GCSE真题November 2014 (v3) QP - Paper 6 CIE Chemistry IGCSE

九天国际教育GCSE真题November 2014 (v3) QP - Paper 6 CIE Chemistry IGCSE

This document consists of 12 printed pages.[Turn overIB14 11_0620_63/RP© UCLES 2014*9232692217*READ THESE INSTRUCTIONS FIRSTWrite your Centre number, candidate number and name on all the work you hand in.Write in dark blue or black pen.You may use an HB pencil for any diagrams or graphs.Do not use staples, paper clips, glue or correction fl uid.DO NOT WRITE IN ANY BARCODES.Answer all questions.Electronic calculators may be used.You may lose marks if you do not show your working or if you do not use appropriate units.At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question.CHEMISTRY 0620/63Paper 6 Alternative to PracticalOctober/November 20141 hourCandidates answer on the Question Paper.No Additional Materials are required.Cambridge International Examinations Cambridge International General Certi ficate of Secondary EducationThe syllabus is approved for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certi fi cate.(a)C omplete and label the diagram to show how a sample of carbon dioxide should be collected.[2](b)C omplete the box to identify the piece of apparatus used. [1](c)S uggest why it is not necessary to heat the reactants. (1)(d)G ive a test to identify carbon dioxide.............................................................................................................................................. test (2)result[Total: 6]© UCLES 20140620/63/O/N/14student investigated the rate of reaction between dilute nitric acid and marble chips (calcium50cm3 of dilute nitric acid, an excess, was poured into a beaker. The beaker was placed on a balance and the marble chips added to the beaker. The apparatus was weighed immediately anda timer started. The mass of the beaker and contents was measured every minute for ten minutes.© UCLES 2014[Turn over0620/63/O/N/140620/63/O/N/14© UCLES 2014(a) U se the balance diagrams to record the mass of the beaker and contents in the table. C omplete the table to work out the total loss in mass of the beaker and contents.time/ minutesbalance diagrammass of beakerand contents / gtotal loss in mass / g93949596g 95.00.0192939495g 291929394g 390919293g 490919293g 589909192g 689909192g 789909192g 889909192g 989909192g 1089909192g[3]0620/63/O/N/14© UCLES 2014[Turn over(b) P lot the results on the grid and draw a smooth line graph.5.04.03.02.01.00.0246time / minutestotal loss inmass / g810[3](c) W hy does the mass of the beaker and contents decrease? (1)(d) (i) W hich result appears to be inaccurate? (1)(ii) U se your graph to work out the loss in mass expected at that time. (1)(e) S ketch on the grid the graph you would expect if the experiment was repeated using the samemass of smaller marble chips. [2][Total: 11]lectricity was used to break down an aqueous solution of copper chromate, CuCrO, which is4 he apparatus used is shown.TA brown deposit was seen forming at one electrode and oxygen was evolved at the other electrode.(a)S uggest a suitable non-metal for the electrodes. (1)(b)G ive one other observation expected during this experiment. (1)(c) Name the brown deposit and identify at which electrode it is formed. (2)(d)N ame the process when electricity breaks down aqueous solutions. (1)[Total: 5]© UCLES 20140620/63/O/N/144A student investigated the addition of four different solids, H, J, K and L, to water.T he same mass of solid, 4g, was used in each experiment.F ive experiments were carried out.(a)E xperiment 1U sing a measuring cylinder, 25cm3 of distilled water was poured into a polystyrene cup. The initial temperature of the water was measured.4g of solid H was added to the water in the cup and the mixture stirred with a thermometer.T he temperature of the liquid mixture was measured after 90 seconds.U se the thermometer diagrams to record the results in the table below.T he thermometer and the cup were rinsed with water.(b)E xperiment 2E xperiment 1 was repeated, using solid J instead of solid H.U se the thermometer diagrams to record the initial and fi nal temperatures in the table.S ome of this solution was kept in a test-tube for Experiment 5.(c)E xperiment 3 and Experiment 4E xperiment 1 was repeated, using solid K and then solid L.U se the thermometer diagrams to record the temperatures in the table. Complete the table.A little of the solution from Experiment 4 was kept for Experiment 5.[3]© UCLES 2014[Turn over0620/63/O/N/140620/63/O/N/14© UCLES 2014 (d) E xperiment 5A little of the solution from Experiment 2 was poured into a test-tube. The solution fromExperiment 4 was added to the test-tube. Observations were noted.observationrapid effervescence(e) D raw a labelled bar chart of the results for Experiments 1, 2, 3 and 4 on the grid below.temperaturedifference / °C[4]U se your results and observations to answer the following questions.(f) W hy were the thermometer and polystyrene cup rinsed after each experiment?.................................................................................................................................................... (1)(g) (i)W hich experiment produced the smallest temperature change? (1)(ii)W hich solids dissolve in water to produce an endothermic change? Explain your choice.............................................................................................................................................. (2)(h)S uggest the temperature change that would occur if(i)Experiment 3 was repeated using 50cm3 of distilled water,............................................................................................................................................. (1)(ii)2g of solid L were used in Experiment 4. (1)(iii)E xplain your answer to (h)(ii). (1)(i)P redict the temperature of the solution in Experiment 2 after one hour. Explain your answer..................................................................................................................................................... (2)(j)S uggest an explanation for the observations in Experiment 5..................................................................................................................................................... (2)(k)S uggest how the reliability of the results could be checked..................................................................................................................................................... (2)[Total: 20]© UCLES 2014[Turn over0620/63/O/N/140620/63/O/N/14© UCLES 20145 T wo aqueous solutions, M and N , were analysed. Solution N was aqueous sodium hydroxide. T he tests on M and N , and some of the observations are in the following table.C omplete the observations in the table.testsobservationstests on solution MSolution M was divided into four equal portions in separate test-tubes.(a) A ppearance of solution M .T he pH of the fi rst portion of M wastested.colourless liquid pH 1(b) C alcium carbonate was added tothe second portion of M .T he gas given off was tested with a splint.effervescence lighted splint extinguished(c) M agnesium ribbon was added tothe third portion of M .T he gas given off was tested with a splint.effervescencelighted splint popped(d) A few drops of dilute nitric acid andaqueous silver nitrate were added to the fourth portion of M .white precipitatetests observations tests on solution NSolution N was divided into three equalportions in separate test-tubes.(e)A ppearance of solution N.T he pH of the first portion ofsolution N was tested (1)pH= [1](f)D rops of aqueous zinc sulfate wereadded to the second portion of Nand the mixture was shaken.E xcess aqueous zinc sulfate was then added to the mixture and the mixture was shaken (1) (2)(g)A mmonium chloride was added tothe third portion of N. The mixture was warmed and the gas tested with damp red litmus paper............................................................................................. .. (2)(h) (i)Identify the gas given off in test (c). (1)(ii)I dentify the gas given off in test (g). (1)(i)I dentify solution M. (2)[Total: 11]0620/63/O/N/14© UCLES 2014[Turn over0620/63/O/N/14© UCLES 2014Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included the publisher will be pleased to make amends at the earliest possible opportunity.Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.6Indicators I ndicators turn different colours in acidic and alkaline solutions. Many plants contain substanceswhich are indicators. These coloured substances can be extracted from the plant material using water and these substances can then be used to test whether a solution is an acid or an alkali. Y ou are provided with two plant materials, blueberries and red cabbage leaves, and common laboratory apparatus and chemicals.(a) P lan an investigation to extract the coloured substances from these plant materials..................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... .............................................................................................................................................. [4] (b) P lan an experiment to show if the coloured substances obtained in (a) are suitable to use asindicators..................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... (3)[Total: 7]。

九天国际教育GCSE真题November 2010 (v3) QP - Paper 1 CIE Chemistry IGCSE

九天国际教育GCSE真题November 2010 (v3) QP - Paper 1 CIE Chemistry IGCSE

This document consists of 16 printed pages.IB10 11_0620_13/RP© UCLES 2010[Turn over*8947497463*UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary EducationCHEMISTRY 0620/13Paper 1 Multiple Choice October/November 201045 MinutesAdditional Materials: Multiple Choice Answer Sheet Soft clean eraserSoft pencil (type B or HB is recommended)READ THESE INSTRUCTIONS FIRSTWrite in soft pencil.Do not use staples, paper clips, highlighters, glue or correction fluid.Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you.There areforty questions on this paper. Answer all questions. For each question there are four possibl e answers A , B , C and D .Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet.Read the instructions on the Answer Sheet very carefully.Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Periodic Table is printed on page 16. You may use a calculator.© UCLES 2010 0620/13/O/N/101 In which changes do the particles move further apart?W Xgas liquid solidY ZA W and XB W and ZC X and YD Y and Z2 The table shows the structure of different atoms and ions.particleproton numbernucleon numbernumber of protonsnumber of neutronsnumber of electronsMg 12 24 12 W 12 Mg 2+ X 24 12 12 10 F 9 19 9 Y 9 F – 9 19 9 10 ZWhat are the values of W, X, Y and Z?W X YZ A 10 10 9 9 B 10 12 10 9 C 12 10 9 10 D 12 12 10 103 Element X has a nucleon (mass) number of 19 and a proton (atomic) number of 9.To which group in the Periodic Table does it belong?A IB IIIC VIID 04 A mixture of ethanol and methanol are separated by fractional distillation.This method of separation depends on a difference in property X of these two alcohols.What is property X? A boiling point B colour C melting pointD solubility© UCLES 2010 0620/13/O/N/10[Turn over5 Chromatography is used to find out if a banned dye, P, is present in foodstuffs. The results are shown in the diagram.Which foodstuff contains P?A PBC D6 Which diagram does not show the outer shell electrons in the molecule correctly?ABCD© UCLES 2010 0620/13/O/N/107 Two isotopes of hydrogen are H 11 and H 21.Which diagram shows the arrangement of particles in the two isotopes?= a nucleus8 The chemical compositions of two substances, W and X, are given.W Na(A l Si 3)O 8X Ca(A l 2Si 2)O 8Which statements are correct?1 W and X contain the same amount of oxygen.2 W contains three times as much silicon as X. 3X contains twice as much aluminium as W.A 1 and 2B 1 and 3C 2 and 3D 1, 2 and 3X and Y form a covalent compound.What is its formula?A XY5B XY3C XYD X3Y10 Element X is shiny and can be formed into a sheet by hammering.Which row correctly describes the properties of element X?conducts electricity melts below 25°CABCD11Substance X was electrolysed in an electrolytic cell.A coloured gas was formed at the anode and a metal was formed at the cathode.anodeWhat is substance X?A aqueous sodium chlorideB molten lead bromideC molten zinc oxideD solid sodium chloride© UCLES 2010 0620/13/O/N/10 [Turn over© UCLES 2010 0620/13/O/N/10II )bulbThe experiment did not work.What change is needed in the experiment to make it work? A Add solid copper(II ) sulfate to the electrolyte. B Increase the temperature of the electrolyte.C Replace the copper electrode by a carbon electrode.D Reverse the connections to the battery.13 When concentrated sodium chloride solution is electrolysed, elements X and Y are formed.What are X and Y?X YA chlorine hydrogenB hydrogen chlorineC hydrogen oxygenD oxygen hydrogen© UCLES 2010 0620/13/O/N/10[Turn over14 Calcium carbonate was reacted with hydrochloric acid in a conical flask. The flask was placed ona balance and the mass of the flask and contents was recorded as the reaction proceeded.During the reaction, carbon dioxide gas was given off.The reaction was carried out at two different temperatures.Which row is correct?change in masstemperature at which masschanged more quickly A decrease highertemperature B decrease lower temperature C increase highertemperature Dincrease lower temperature15 Which is an endothermic process?A burning hydrogenB distilling petroleum Creacting potassium with waterD using petrol in a motor car engine16 The diagrams show some pieces of laboratory equipment.3thermometer2stop-clock1balanceWhich equipment is needed to find out whether dissolv ing salt in water is an endothermic process? A 1 onlyB 1 and 3C 2 and 3D 3 only17Which reaction will result in a decrease in pH?A adding calcium hydroxide to acid soilB adding citric acid to sodium hydrogen carbonate solutionC adding sodium chloride to silver nitrate solutionD adding sodium hydroxide to hydrochloric acid18When pink crystals of cobalt(II) chloride are heated, steam is given off and the colour of the solid changes to blue.CoC l2.6H2O CoC l2 + 6H2OWhat happens when water is added to the blue solid?colour temperatureA changes to pink decreasesB changes to pink increasesC remains blue decreasesD remains blue increases19The red colour in some pottery glazes may be formed as a result of the reactions shown.CuCO3 CuO + CO2CuO + SnO Cu + SnO2heatThese equations show that ……1…… is oxidised and ……2…… is reduced.Which substances correctly complete gaps 1 and 2 in the above sentence?1 2A CO2 SnO2B CuCO3 CuOC CuO SnOD SnO CuO© UCLES 2010 0620/13/O/N/10© UCLES 2010 0620/13/O/N/10[Turn over20 Some barium iodide is dissolved in water.Aqueous lead(II ) nitrate is added to the solution until no more precipitate forms.This precipitate, X, is filtered off.Dilute sulfuric acid is added to the filtrate and another precipitate, Y, forms.What are the colours of precipitates X and Y?X Y A white white B white yellow C yellow white Dyellow yellow21 The table shows some reactions of the halogens.Which reaction is the most likely to be explosive?reactionchlorine gasbromine gasiodine gasreaction with hydrogen A B C reaction with ironvery vigorousless vigorousD22 Which compound is likely to be coloured?A KMnO 4B KNO 3C K 2CO 3D K 2SO 423 A salt is made by adding an excess of an insoluble metal oxide to an acid.How can the excess metal oxide be removed?A chromatographyB crystallisationC distillationD filtrationWhat is the pH of the acid before the reaction and what type of element is X?pH type of element XA greater than 7 metalB greater than 7 non-metalC less than 7 metalD less than 7 non-metal25The diagram shows the positions of elements P, Q, R, S and T in the Periodic Table.These letters are not the chemical symbols for the elements.S T PQ RWhich statement about the properties of these elements is correct?A P reacts more vigorously with water than does Q.B P, Q and R are all metals.C T exists as diatomic molecules.D T is more reactive than S.© UCLES 2010 0620/13/O/N/1026 The table compares the properties of Group I elements with those of transition elements.Which entry in the table is correct?property Group I elementstransition elementsA catalytic activitylowhighB density high lowC electrical conductivitylow high Dmelting pointhighlow27 Which pollutant, found in car exhaust fumes, does not come from the fuel?A carbon monoxideB hydrocarbonsC lead compoundsD nitrogen oxides28 The diagram shows the materials used in the production of steel from impure iron.What could element X be? A calcium B carbon C nitrogenD sulfur29 Which property do all metals have?A Their boiling points are low.B Their densities are low.C They conduct electricity.D They react with water.30Which diagram could represent the structure of an alloy?A BC D31 Some metals react readily with dilute hydrochloric acid.Some metals can be extracted by heating their oxides with carbon.For which metal are both statements correct?A calciumB copperC ironD magnesium32Which diagram shows a common use of stainless steel?DA BCA to kill bacteria in the waterB to make the water neutralC to make the water taste betterD to remove any salt in the water34 A test-tube containing damp iron wool is inverted in water.After three days, the water level inside the test-tube has risen.Which statement explains this rise?A Iron oxide has been formed.B Iron wool has been reduced.C Oxygen has been formed.D The temperature of the water has risen.35 A bag of fertiliser ‘Watch it grow’ contains ammonium sulfate and potassium sulfate.Which of the three elements N, P and K does ‘Watch it grow’ contain?N P KABCD36 Which information about carbon dioxide and methane is correct?carb o n di o xide methane A formed when vegetation decomposes B greenhouse gas C present in unpolluted airDproduced during respiration37 Ethene reacts with Y to produce ethanol.ethene + Y → ethanolWhat is Y?A hydr o genB o xygenC steamD yeast38 In an oil refinery, crude oil is separated into useful fractions.The diagram shows some of these fractions.refinery gases gasolene Xdiesel YZWhat are fractions X, Y and Z?X Y Z A fuel oil bitumen paraffin (kerosene)B fuel oil paraffin (kerosene)bitumen C paraffin (kerosene) bitumen fuel oil D paraffin (kerosene)fuel oilbitumen39 The diagram shows the structure of a compound.H C H C HHC HO H H C HTo which classes of compound does this molecule belong?alkane alkene alc o h o l A n o n o n o B n o yes yes C yes n o yes Dyes yes yes40 Which structures show compounds that are members of the same homologous series?OC HHC H HC H HHH1HCH HC H HCO OH2HC H HC H HC HH HC 3HC H HC H HC H HC H HOH4A 1 and 2B 1 and 4C 2 and 3D 3 and 416Per mission to r epr oduce items wher e thir d-par ty owned mater ial pr otected by copyr ight is included has been sought and clear ed wher e possible. Ever y reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity.University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. G r o u p140C eC e r i u m 58141P rP r a s e o d y m i u m 59144N d N e o d ym i u m 60P mP r o m e t h i u m61150S mS a m a r i u m62152E uE u r o p i u m63157G dG a d o l i n i u m64159T bT e r b i u m65162D yD y s p r o s i u m66165H oH o l m i u m67167E rE r b i u m68169T mT h u l i u m69173Y bY t t e r b i u m70175L uL u t e t i u m71232T hT h o r i u m 90P aP r o t a c t i n i u m 91238UU r a n i u m92N pN e p t u n i u m93P uP l u t o n i u m94A mA m e r i c i u m95C mC u r i u m96B kB e r k e l i u m97C fC a l i f o r n i u m98E sE i n s t e i n i u m99F mF e r m i u m100M dM e n d e l e v i u m101N oN o b e l i u m102L rL a w r e n c i u m1031HH y d r o g e n17L iL i t h i u m 323N aS o d i u m 1124M gM a g n e s i u m1240C aC a l c i u m 2045S c S c a n d i u m 2148T i T i t a n i u m2251V V a n a d i u m 2352C r C h r o m i u m 2455M n M a n g a n e s e 2556F e I r o n 2659C o C o b a l t 2759N i N i c k e l 2864C u C o p p e r 2965Z n Z i n c3070G aG a l l i u m3127A l A l u m i n i u m1311B B o r o n 512C C a r b o n614NN i t r o g e n716OO x y g e n819FF l u o r i n e928S iS i l i c o n1431PP h o s p h o r u s1532SS u l f u r1635.5C lC h l o r i n e1740A rA r g o n1820N eN e o n104H eH e l i u m273G eG e r m a n i u m3275A sA r s e n i c3379S eS e l e n i u m3480B rB r o m i n e3584K rK r y p t o n3639KP o t a s s i u m 1988S rS t r o n t i u m 3889Y Y t t r i u m 3991Z r Z i r c o n i u m4093N b N i o b i u m 4196M o M o l y b d e n u m 42T c T e c h n e t i u m 43101R u R u t h e n i u m 44103R h R h o d i u m 45106P d P a l l a d i u m 46108A g S i l v e r47112C dC a d m i u m48115I nI n d i u m49119S nT i n50122S bA n t i m o n y51128T eT e l l u r i u m52127II o d i n e53131X eX e n o n54137B aB a r i u m 56139L a L a n t h a n u m 57*178H fH a f n i u m72181T a T a n t a l u m 73184W T u n g s t e n 74186R e R h e n i u m 75190O s O s m i u m 76192I rI r i d i u m 77195P t P l a t i n u m78197A uG o l d79201H gM e r c u r y80204T lT h a l l i u m81207P bL e a d82209B iB i s m u t h83P oP o l o n i u m84A tA s t a t i n e85R nR a d o n86F rF r a n c i u m 87227A cA c t i n i u m899B eB e r y l l i u m4II I I I II V V V I V I I 085R bR u b i d i u m 37133C sC a e s i u m 55226R a R a d i u m 88T h e v o l u m e o f o n e m o l e o f a n y g a s i s 24d m 3a t r o o m t e m p e r a t u r e a n d p r e s s u r e (r .t .p .).a Xb a = r e l a t i v e a t o m ic m a s sX = a t o m i c s y m b o lb = p r o t o n (a t o m ic ) n u m b e rK e y *58-71 L a n t h a n o i d s e r i e s 90-103 A c t i n o i d s e r i e s D A T A S H E E T T h e P e r i o d i c T a b l e o f t h e E l e m e n t sPMT。

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This document consists of 19 printed pages and 1 blank page.IB13 11_0620_13/RP© UCLES 2013[Turn over*5450428188*UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary EducationCHEMISTRY 0620/13Paper 1 Multiple Choice Octob e r/Nov e mb e r 201345 MinutesAdditional Materials: Multiple Choice Answer Sheet Soft clean eraserSoft pencil (type B or HB is recommended)READ THESE INSTRUCTIONS FIRSTWrite in soft pencil.Do not use staples, paper clips, highlighters, glue or correction fluid.Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you.DO NOT WRITE IN ANY BARCODES.There are forty questions on this paper. Answer all questions. For each question there are f our possible answers A , B , C and D .Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet.Read the instructions on the Answer Sheet very carefully.Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Periodic Table is printed on page 20. Electronic calculators may be used.© UCLES 2013 0620/13/O/N/13The glass slide is removed. Diagram 2 shows the appearance of the gas jars after one hour.diagram 1diagram 2bromine vapourairWhich statement explains why the bromine and air mix together? A Bromine is denser than air. B Bromine is lighter than air.C Bromine molecules moved upwards and molecules in air moved downwards.D Molecules in bromine and air moved randomly.2 The diagram shows a method for separating a substance that contains X and Y.Which types of substance can be separated as shown? A compounds B elements C mixtures D molecules3Diagram 1 shows the paper chromatogram of substance X.RYXdiagram 1Diagram 2 shows the cooling curve for substance Y.timediagram 2Which statement about X and Y is correct?A X is a mixture and Y is a pure substance.B X is a pure substance and Y is a mixture.C X and Y are mixtures.D X and Y are pure substances.© UCLES 2013 0620/13/O/N/13 [Turn over© UCLES 2013 0620/13/O/N/134 The atomic structures of four atoms are shown.atomnumber of neutronsnumber of protonsnumber of electronsW6 6 6X 7 7 7Y 8 6 6 Z8 8 8Which pair of atoms are isotopes? A W and XB W and YC X and YD Y and Z5 The diagram shows the structure of three particles, R, S and T.key = electron = neutron = proton = nucleuse n p RSTWhich row describes these particles?ionsisotopes A R S and T B R and S T C S R and T D TR and S6Which statement about the bonding in a molecule of water is not correct? A Both hydrogen and oxygen have a noble gas configuration of electrons. B Each hydrogen shares its one electron with oxygen. C Oxygen shares one of its own electrons with each hydrogen.D Oxygen shares two of its own electrons with each hydrogen.© UCLES 2013 0620/13/O/N/13[Turn over7 The electronic structures of atoms P and Q are shown.P and Q react to form an ionic compound.What is the formula of the compound? A Q 7PB QPC QP 3D QP 78 A solid mixture contains an ionic salt, X, and a covalent organic compound, Y. Two students suggest methods of separating the mixture as shown.method 1method 2Which methods of separation are likely to work?12 A B C D© UCLES 2013 0620/13/O/N/13M r , is not correct for the molecule given? molecule M rA ammonia, NH 3 17B carbon dioxide, CO 2 44C methane, CH 4 16 Doxygen, O 2 1610 Two electrolysis experiments were carried out as shown in the diagram below.The graphite electrodes are labelled 1-4.molten sodium chlorideconcentrated aqueous sodium chlorideWhich row describes the products at the electrodes in these experiments?electrode 1electrode 2electrode 3electrode 4A chlorine hydrogen chlorine hydrogenB chlorine sodium chlorine hydrogenC chlorine sodium hydrogen chlorineD sodium chlorine sodium chlorine© UCLES 2013 0620/13/O/N/13[Turn over11 One molten compound and two aqueous solutions were electrolysed.The table gives the compounds electrolysed and the electrodes used.substance electrolysed electrodes1 concentrated hydrochloric acid carbon2 concentrated sodium chlorideplatinum 3molten lead bromideplatinumIn which experiments is a gas evolved at the cathode?A 1, 2 and 3B 1 and 2 onlyC 1 onlyD 3 only12When ammonium nitrate is added to water the temperature of the water decreases.The ammonium nitrate can be recovered by evaporating the water added.Which explains these observations?A The ammonium nitrate dissolves in the water and the process is endothermic.B The ammonium nitrate reacts with the water and the process is endothermic.C The ammonium nitrate dissolves in the water and the process is exothermic.D The ammonium nitrate reacts with the water and the process is exothermic.13 Which substance could not be used as a fuel to heat water in a boiler?A ethanolB hydrogenC methaneD oxygen14 Which substance is not a fossil fuel?A coalB keroseneC gasolineD wood© UCLES 2013 0620/13/O/N/1315 A student investigates the rate of reaction between zinc and an excess of sulfuric acid.The graph shows the results of two experiments, X and Y.volume of hydrogenWhich change explains the difference between X and Y? A A catalyst is added in Y.B A lower temperature is used in Y.C Larger pieces of zinc are used in Y.D Less concentrated acid is used in Y.16 When green iron(II ) sulfate is heated, it turns white and a colourless liquid is produced. When the liquid is put back into the white solid it changes back to green.What type of reaction takes place and what is the name of the liquid?type of reactionname of liquidA redox sulfuric acidB redox waterC reversible sulfuric acid Dreversible water17The reactions shown may occur in the air during a thunder storm.N2 + O2→ 2NO2NO + O2→ 2NO2NO + O3→ NO2 + O2Which row shows what happens to the reactant molecules in each of these reactions?N2 NO O3A oxidised oxidised oxidisedB oxidised oxidised reducedC reduced reduced oxidisedD reduced reduced reduced18Which are properties of an acid?1 reacts with ammonium sulfate to form ammonia2 turns red litmus blue1 2ABCD19Which of the following are properties of the oxides of non-metals?property 1 property 2A acidic covalentB acidic ionicC basic covalentD basic ionic© UCLES 2013 0620/13/O/N/13 [Turn over20The cations shown are identified by the colour of the precipitates formed when an excess of an aqueous solution of X is added.cations present effect of adding an excess ofaqueous Xiron(II) (Fe2+) greenprecipitatecopper(II) (Cu2+) lightblueprecipitateiron(III) (Fe3+) red-brownprecipitate What is X?A ammoniaB limewaterC silver nitrateD sodium hydroxide21Calcium, on the left of Period 4 of the Periodic Table, is more metallic than bromine on the right of this period.Why is this?Calcium hasA fewer electrons.B fewer protons.C fewer full shells of electrons.D fewer outer shell electrons.22The diagrams show the labels of four bottles.Which label is not correct?A B C DBromineBr2 Harmful liquid. Do not spill.IodineI2DangerAvoid breathing vapourfrom the solid.PotassiumKDangerStore under water.SodiumNaDangerStore under oil.© UCLES 2013 0620/13/O/N/1323An element has a melting point of 1084°C and a density of 8.93g/cm3. It’s oxide can be used asa catalyst.In which position in the Periodic Table is the element found?A B CD24The diagram shows a light bulb.filamentargonWhy is argon used instead of air in the light bulb?A Argon is a good conductor of electricity.B Argon is more reactive than air.C The filament glows more brightly.D The filament does not react with the argon.25Duralumin is an alloy. It contains aluminium, copper and magnesium.It has many uses including the manufacture of cooking utensils and ships.Which statement about duralumin and its properties is correct?A It is a good conductor of electricity.B It is brittle.C It is soluble in water.D The aluminium, copper and magnesium are chemically combined.26The list gives the order of some metals (and hydrogen) in the reactivity series.Metal X is also included:Most reactive KMgZn(H)XLeast reactive CuWhich row correctly shows the properties of metal X?reacts with dilute acids oxide reduced by carbonA no noB no yesC yes noD yes yes27 A new bicycle is being developed.Two different materials are used in its construction, both of which must be corrosion resistant.Which two metals could be used?A aluminium and mild steelB aluminium and stainless steelC mild steel and pure ironD pure iron and stainless steel28Iron is extracted from hematite in the Blast Furnace.The hematite contains silica as an impurity.What reacts with this impurity to remove it?A calcium oxideB carbonC carbon dioxideD oxygen29In which process is carbon dioxide not formed?A burning of natural gasB fermentationC heating limeD respiration30Carbon dioxide is produced whenX reacts with ethanol.Y reacts with sodium carbonate.What are X and Y?X YA H2 HC lB H2 NaOHC O2 HC lD O2 NaOH31 A sample of fertiliser is tested by warming it with aqueous sodium hydroxide.A colourless gas is produced which turns red litmus paper blue.Which element, essential for plant growth, must be present?A nitrogenB phosphorusC potassiumD sulfur32Iron rusts. This process involves the ……1…… of iron. Rusting can be prevented by covering the iron with grease or paint which stops ……2…… from reaching the surface of the iron.Which words correctly complete gaps 1 and 2?1 2A oxidation nitrogenB oxidation oxygenC reduction nitrogenD reduction oxygen33Oxides of nitrogen are given out from car exhausts.Which row best shows why oxides of nitrogen are unwanted?acidic toxicA no noB no yesC yes noD yes yes34Water is treated at a water works to make it fit to drink.What is present in the water when it leaves the waterworks?A bacteria onlyB bacteria and insoluble substancesC chlorine onlyD chlorine and soluble substancesproduct What is the product and what waste gas is formed?gasproduct wasteA lime, CaO carbon monoxideB lime, CaO carbon dioxideC slaked lime, Ca(OH)2 carbon monoxideD slaked lime, Ca(OH)2 carbon dioxide36Molecule X is both an alkene and a carboxylic acid.Which row describes X?presentsaturated –COOHA no noB no yesC yes noD yes yes37Which hydrocarbon reacts with steam to produce ethanol?A C2H4B C2H6C C3H6D C3H838 Petroleum is a mixture of different hydrocarbons.Which process is used to separate the petroleum into groups of similar hydrocarbons?A combustionB crackingC fractional distillationD reduction39 Which row represents compounds in the same homologous series?H C H H C H H C H H H H C H HC H H C H H C HH HH C H HC H H C HH HH C HHC HH O H H C HH C OH H C H HHC CH HH C HH C HH HHC H HC HH HH C HHOHH C HHC H H C Br H C H H HHC HH H H C HH H HC HH C OO HA B C D C C H HHC HH C HH HHH40 The diagram shows a flow diagram.petroleumsubstance X ● burns with a yellow flame ● does not decolourise bromine waterWhich type of organic compounds are X and Y?substance Xsubstance YA alcohol alkaneB alkane alkeneC alkene alkane Dalkane alcoholBLANK PAGE20Per mission to r epr oduce items wher e thir d-par ty owned mater ial pr otected by copyr ight is included has been sought and clear ed wher e possible. Ever y reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity.Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. G r ou p140C eC e r i u m 58141P rP r a s e o d y m i u m 59144N d N e o d y m i u m 60P mP r o m e t h i u m61150S mS a m a r i u m62152E uE u r o p i u m63157G dG a d o l i n i u m64159T bT e r b i u m65162D yD y s p r o s i u m66165H oH o l m i u m67167E rE r b i u m68169T mT h u l i u m69173Y bY t t e r b i u m70175L uL u t e t i u m71232T hT h o r i u m 90P aP r o t a c t i n i u m 91238UU r a n i u m92N pN e p t u n i u m93P uP l u t o n i u m94A mA m e r i c i u m95C mC u r i u m96B kB e r k e l i u m97C fC a l i f o r n i u m98E sE i n s t e i n i u m99F mF e r m i u m100M dM e n d e l e v i u m101N oN o b e l i u m102L rL a w r e n c i u m1031HH y d r o g e n17L iL i t h i u m 323N aS o d i u m 1124M gM a g n e s i u m1240C aC a l c i u m 2045S c S c a n d i u m 2148T i T i t a n i u m2251V V a n a d i u m 2352C r C h r o m i u m 2455M n M a n g a n e s e 2556F e I r o n 2659C o C o b a l t 2759N i N i c k e l 2864C u C o p p e r 2965Z n Z i n c3070G aG a l l i u m3127A l A l u m i n i u m1311B B o r o n 512C C a r b o n614NN i t r o g e n716OO x y g e n819FF l u o r i n e928S iS i l i c o n1431PP h o s p h o r u s1532SS u l f u r1635.5C lC h l o r i n e1740A rA r g o n1820N eN e o n104H eH e l i u m273G eG e r m a n i u m3275A sA r s e n i c3379S eS e l e n i u m3480B rB r o m i n e3584K rK r y p t o n3639KP o t a s s i u m 1988S rS t r o n t i u m 3889Y Y t t r i u m 3991Z r Z i r c o n i u m4093N b N i o b i u m 4196M o M o l y b d e n u m 42T c T e c h n e t i u m 43101R u R u t h e n i u m 44103R h R h o d i u m 45106P d P a l l a d i u m 46108A g S i l v e r47112C dC a d m i u m48115I nI n d i u m49119S nT i n50122S bA n t i m o n y51128T eT e l l u r i u m52127II o d i n e53131X eX e n o n54137B aB a r i u m 56139L a L a n t h a n u m 57*178H fH a f n i u m72181T a T a n t a l u m 73184W T u n g s t e n 74186R e R h e n i u m 75190O s O s m i u m 76192I rI r i d i u m 77195P t P l a t i n u m78197A uG o l d79201H gM e r c u r y80204T lT h a l l i u m81207P bL e a d82209B iB i s m u t h83P oP o l o n i u m84A tA s t a t i n e85R nR a d o n86F rF r a n c i u m 87227A cA c t i n i u m899B eB e r y l l i u m4II I I I II V V V I V I I 085R bR u b i d i u m 37133C sC a e s i u m 55226R a R a d i u m 88T h e v o l u m e o f o n e m o l e o f a n y g a s i s 24d m 3a t r o o m t e m p e r a t u r e a n d p r e s s u r e (r .t .p .).a Xb a = r e l a t i v e a t o m ic m a s sX = a t o m i c s y m b o lb = p r o t o n (a t o m ic ) n u m b e rK e y *58-71 L a n t h a n o i d s e r i e s 90-103 A c t i n o i d s e r i e s D A T A S H E E T T h e P e r i o d i c T a b l e o f t h e E l e m e n t sPMT。

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