九年级第九单元检测题

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2020年人教版九年级下册第九单元课题 2 溶解度同步检测(包含答案解析)

课题2 溶解度同步检测一、选择题1.能证明某KCl溶液在20 ℃时已经达到饱和状态的方法是()A．温度不变时，向该溶液中加入少量水，结果溶液变稀B．取少量该溶液，降温至10 ℃时，有KCl晶体析出C．取少量该溶液升温，无KCl晶体析出D．温度不变时，向该溶液中加入少量KCl晶体，晶体质量不再改变2.室温时，从100 g饱和硝酸钾溶液中取出10 g溶液，那么剩余的硝酸钾溶液() A．还是饱和溶液 B．变成不饱和溶液了C．硝酸钾质量没变 D．硝酸钾和水的质量没变3.能证实20 ℃时原KNO3的溶液是饱和溶液的事实是()A．降温到10 ℃时有KNO3晶体析出B．蒸发掉10克水，有KNO3晶体析出C．加热到30 ℃后，再加入KNO3晶体仍能继续溶解D．在20 ℃时，向上述KNO3溶液中加入少量KNO3晶体，溶液的质量不变。

4.T℃时，将一定量的生石灰放入饱和的石灰水中，搅拌，并冷却到原温度，得到的溶液与原溶液相比，下列物理量前后不变化的是()①溶质质量②溶剂质量③溶液质量④溶质质量分数⑤溶解度A．①③⑤ B．②④⑤ C．②④ D．④⑤5.如图所示，甲图表示氯化钠在水中的溶解度曲线，乙图表示硝酸钾在水中的溶解度曲线。

下列说法错误的是()A．由甲图可知，氯化钠在40 ℃时的溶解度为36.6 gB．由乙可知，硝酸钾在水中的溶解度随温度的升高而增大C．比较甲乙可知，可采用蒸发结晶来提纯混有少量氯化钠的硝酸钾晶体D．比较甲乙可知，相同温度下影响固体溶质溶解度的因素是溶质的性质6.下列有关溶液的说法不正确的是()A．可口可乐汽水和白蒲黄酒都属于溶液B．固体物质的溶解度不一定都随温度的升高而增大C．一定温度下，向氯化钠饱和溶液中加入水后会变成不饱和溶液D．某物质在100 g溶剂里达到饱和状态时所溶解的质量就是该物质的溶解度7.a、b两种固体物质的溶解度曲线如图所示，下列说法中不正确的是()A．t1℃时，a、b物质的溶解度相等B．a物质的溶解度随温度的升高而增大，b物质的溶解度随温度的升高而减小C．t2℃时，将a、b两物质的饱和溶液分别降温至t1℃，所得的溶液溶质质量分数相等D．提纯a中混有少量的b，可采用降温结晶的方法8.20 ℃时，往100 g硝酸钾溶液中加入20 g硝酸钾，充分搅拌，硝酸钾部分溶解。

人教版九年级化学下册第九单元溶液单元测试题及答案

第九单元《溶液》单元测试题班级：姓名：学号：(有关相对原子质量：H-1， C-12， O-16， S-32， Cl-35.5, Ca-40 Cu-64,Zn-65,)一、单项选择题（本大题包括20小题，每小题2分，共40分）1.溶液一定是（）A.单质B.化合物C.纯净物D.混合物2.生活中常见的下列物质，不属于溶液的是（）A.糖水B.蒸馏水C.碘酒D.汽水3.一瓶100mL20%的NaCl溶液倒出10 mL后余下的溶液与最初的溶液相比（）A.溶质的质量分数变小了B.溶质和溶剂的比例变小了C.溶质的质量变少了D.B和C都正确4.下列关于溶液的说法正确的是（）A.溶液都是无色的B.溶液中可能含有多物质C.稀溶液一定是不饱和溶液D.均一、稳定的液体一定是溶液5.在一瓶NaCl饱和溶液中，当温度不变时，加入少量NaCl晶体，则（）A.溶液的质量增大B.晶体的质量不变C.晶体的质量增大D.晶体溶解一部分6.对于多数固体溶质的不饱和溶液，要使之成为饱和溶液的方法有（）①降低温度；②升高温度；③加同种溶质；④加溶剂；⑤恒温蒸发溶剂A.①③⑤B.②③④C.①②③D.②③⑤7.实验室有足量的20%的NaOH溶液和蒸馏水，欲配制10%的NaOH溶液100 g，需要20%的NaOH 溶液（）A.95 gB.10 gC.50 gD.100 g8.日晒海水可以得到食盐固体，其原因是（）A.受热时食盐的溶解度降低B.受热时食盐的溶解度显著增大C.受热时海水中的水分蒸发D.受热时海水发生分解9.配制一定溶质质量分数的氯化钠溶液的一些操作步骤见下图，正确的操作顺序是（）①②③④⑤A.④⑤①②③B.①②③④⑤C.③④①②⑤D.②①④③⑤10.一杯10 ℃的硝酸钾溶液，能证明它是饱和溶液的方法是（）A.蒸发5 g水有固体溶质析出B.加入少许硝酸钾晶体不溶C.把溶液降温至 0 ℃有固体溶质析出D.上述三种方法都行11.把100 mL 10%的氯化钠溶液稀释50倍，稀释后溶液中的溶质质量（）A.减少50倍B.增加50倍C.不变D.减少5倍12.20 ℃时，向100 g质量分数为 26.5%的饱和氯化钠溶液中加入 3.5 g氯化钠，此时溶液中溶质的质量分数为（）A.26.5%B.30%C.25%D.13.在粗盐提纯的实验中，若过滤后滤液仍浑浊，不可能是（）A.滤纸破了B.漏斗下端没有紧靠烧杯内壁C.液面高于滤纸边缘D.承接滤液的烧杯没洗干净14.将m g硫酸钾的不饱和溶液恒温蒸发水分至有晶体析出，在此变化过程中溶液里溶质质量分数p%与时间t的关系正确的是（）A B C D15．可以作为溶质的（）A．只有固体 B.只有液体 C.只有气体 D.气、液、固体都可以16．在一定温度下，为使溶质是固体物质的不饱和溶液变成饱和溶液，可采取的办法是（）A 增大压强 B 升高温度 C 加入溶质 D 增加溶剂17．现有60℃时硝酸钾的饱和溶液，若将其温度降到20℃，此时有关该溶液的说法不正确的是（）A．仍为饱和溶液 B 硝酸钾的溶解度发生了变化C．降温前后溶液的质量不变 D 降温前后溶剂的质量不变18．不能影响物质溶解度大小的因素是（）A 温度高低B 溶质、溶剂的量C 溶剂种类D 溶质种类19．现有一瓶溶质质量分数为10%的食盐水，关于该食盐水的说法正确的是（）A．m质：m剂=1：10 B．m质：m液=1：10 C．m质：m液=1：11 D．m剂：m液=10：11 20．将少量的下列物质加入到水中不能形成溶液的是（）A．味精 B．硫酸铜 C．金龙鱼牌食用调和油 D．食用加碘盐二、填空题（每空1分，共31分）汽水会自动喷出来，这说明气体在水中的溶解度与有关。

湖北省黄石市第八中学九年级化学下册第9单元溶液检测试题(解析版)

湖北省黄石市第八中学2021年秋九年级化学下册第9单元溶液检测试题（解析版）一、选择题：1.将60℃的硝酸钾饱和溶液降温到10℃时，有晶体析出（晶体中不含水），下列各量没有发生改变的是（）A．硝酸钾的溶解度B．溶液的质量分数C．溶液中溶质的质量D．溶液中溶剂的质量【答案】D【解析】2.医疗上用的生理盐水是0.9%的氯化钠溶液。

若在实验室配制0.9%的氯化钠溶液100g，下列配制过程正确的是（）A．用托盘天平称量0.9g氯化钠 B．用量筒量取100g水C．把食盐倒入量筒中搅拌溶解 D．用烧杯量取91g水【答案】A【解析】溶质的质量分数是溶质的质量占溶液质量的百分含量，故溶质的质量=溶液的质量×溶质的质量分数=100g×0.9%=0.9g.3.在配制一定溶质质量分数的蔗糖溶液时，导致溶液中蔗糖的质量分数偏大的可能原因有（）A．用来配制溶液的烧杯刚用少量蒸馏水润洗过B．用量筒量取水时俯视读数C．用托盘天平称取蔗糖时，将蔗糖放在右盘，且称量时使用了游码D．用了含少量杂质的蔗糖配制溶液【答案】B【解析】溶液中蔗糖的质量分数偏大的原因：溶质少了或溶剂多了。

用量筒量取水时俯视读数，读数偏大，而实际液体偏少，而导致溶剂的量少，使溶液中蔗糖的质量分数偏大。

4.a、b、c三种物质在水中的溶解度曲线如图所示,下列有关叙述错误的是()A.c物质属于易溶性物质B.20℃时,将10gb溶解在100g水中得110g不饱和溶液C.20℃时,a物质在水中的溶解度是10gD.50℃时a和b的两杯饱和溶液至20℃,析出a一定比b多【答案】D5.下列物质属于溶液的是( )A.石灰浆B.生理盐水C.菜汁D.牛奶【解析】根据溶液、浊液的区别，可知生理盐水是氯化钠以离子形式分散在水中，形成的均一、稳定的混合物，属于溶液。

6.下列叙述中错误的是（）A.“波尔多液”是无色、透明、均一、稳定的混合物B。

食用油溶于汽油，食用油是溶质，汽油是溶剂C.洗涤剂去油污是利用了乳化作用D.硝酸铵溶于水，溶液温度明显降低【答案】A【解析】波尔多液是由硫酸铜和生石灰和水混合制成的，含有不溶性的蓝色沉淀——氢氧化铜，A错误。

第九单元溶液期末复习检测---2022-2023学年九年级化学人教版下册

溶液期末复习检测一、选择题（每题只有一个选项）1.下列物质加入水中，能形成溶液的是（）A．沙子B．食盐C．植物油D．面粉2.下列有关溶液的说法中，正确的是()A.溶液都是无色的B.将NaCl放入植物油中搅拌，能形成溶液C.将40%的NaOH溶液均分成两份，每份溶液的溶质质量分数都为20%D.溶液是稳定的混合物3.下列洗涤方法利用了乳化原理的是（）A．用酒精清洗试管中的碘B．用汽油清洗衣服上的油污C．用洗洁精清洗餐具上的油污D．用水清洗试剂瓶中残留的氯化钠4.某化学兴趣小组利用如图装置进行实验：打开弹簧夹，将液体a滴入试管①中与固体b接触，若试管②中的导管口没有气泡产生，则液体a和固体b的组合可能是（）A．水和生石灰B．稀盐酸和碳酸钠C．水和硝酸铵D．过氧化氢溶液和二氧化锰5.下列关于溶液的说法错误的是()A. 与乳化作用相比，溶解能使物质混合得更均匀B. 20 ℃时，50 g水中溶解了15 g硝酸钾，则20 ℃时硝酸钾的溶解度是30 gC. 一定温度下，固体物质的溶解度不随水的质量改变而改变D. 硝酸钾的饱和溶液恒温蒸发部分水后，剩余溶液溶质质量分数不变6.常温下，对100 mL氯化钠饱和溶液进行图示实验。

下列分析错误的是()A.实验1后，甲、乙中溶液的溶质质量分数相等B.实验2后，乙中比甲中氯化钠的溶解度大C.实验2后，甲中溶液为氯化钠的不饱和溶液D.实验2后，甲、乙中溶液所含溶质质量相等7. 农业上常用溶质质量分数为16%氯化钠溶液选种，若配制100 g质量分数为16%的氯化钠溶液，下列说法不正确的是（）A．实验步骤是计算、称量、量取、溶解B．实验中用到的玻璃仪器有烧杯、量筒、玻璃棒和胶头滴管C．称量时，将16 g氯化钠固体直接放在托盘天平的右盘上D．用100 mL量筒量取所需水的体积8．已知KCl的溶解度如下表所示．．．A．10℃时，100g水里最多能溶解31.2gKClB．20℃时，向100g水中加入40gKCl，充分搅拌，所得溶液质量为140g C．通过升高温度，能将30℃时恰好饱和的KCl溶液转化为不饱和溶液D．50℃时，饱和KCl溶液中溶质的质量分数为42.6100%142.69. a、b两物质的溶解曲线如图，有关叙述正确的是A．a的溶解度大于b的溶解度B．10℃时a、b的饱和溶液，升温到t℃时仍是饱和溶液C．10℃时，用相同质量的a、b分别配成饱和溶液，所需水的质量a>bD．t℃时a、b的饱和溶液，升温到30℃所得溶液中溶质的质量分数a>b10.配制70 g 16%的NaCl溶液，下列操作会使所配溶液溶质质量分数大于16%的是()A. 称取氯化钠B. 转移氯化钠C. 量取水D. 配好后装瓶11.在“一定溶质质量分数的氯化钠溶液的配制”实验活动中，可能导致氯化钠溶液溶质质量分数偏大的是()A.量取水时量筒底部事先有少量水B.所用氯化钠固体不纯C.称量时砝码和药品的位置放反D.将量筒中的水倒入烧杯时有水溅出12．下图是两种物质的溶解度曲线。

九年级英语第九单元测试题

九年级英语第九单元测试题一、词汇:（10分）1. About 5000 cars were p_________ in the factory last month.2. This class is too large. We shall have to d________ it.3. The price of oil has r_________ to $100 a bucket.4. Of the 7 brothers only 4 now r________, the rest are dead.5. She was wearing a new dress, but he didn’t even n_________ it.6. After reading the letter, he t_________ it in the waste-paper basket.7. Please k_________ on the door before entering.8. I hope we’re not moving t__________ the war again.9. Xi’an is the city where many a_________ emperors made the capital.10. Today is so cold. The temperature is b__________ zero.二.用所给词的适当形式填空。

(10)1.The students don’t know the _______________ (different).2.Knives are used for ______________ (cut) .3.English is the most widely__________ (speak) in the world.4.English is spoken as the ____________ (one) language by most people in the U. S. A.5.He couldn’t get into the house because the door ___________(lock).6.I think English is very ______________ (use), too.7.______________ (travel) also use computers.8.He spoke very ________________ (clear), so it was easy to follow him .9. China is one of the _______________ (large) countries in the world .10.Three quarters of the _________________ (world) books are written in English .三．单项选择(20)（）1. Sam, you hair is too long and it looks dirty. You’d better ________ it _______.A. have, to cutB. get, cuttingC. have, cutD. get, cutted （）2. ---Your dress is so nice. ---Thanks! It ______ by my uncle as a birthday present.A. gaveB. was givenC. has givenD. will give（）3. The new bridge over the Yuan Shui River______last year.A.builtB.was builtC.has builtD. is built（）4 .All the books will _______ to the children who live in the small village.A. be sentB. sentC. be sendD. send（）5.Which language is the most widely ______ in the world?A.speakingB.speakC.spokeD. spoken .（）6. When ______ the car ________?A. did, inventB. was, inventedC. does, inventD. in, invented（）7. Jack ______ leave _____ his teacher comes back.A. doesn’t, untilB. /, untilC. won’t, /D. won’t, until（）8. Keys _______ used for ______ the doors.A. is, openingB. is, openedC. are, openingD. are opened（）9. My mother told me that my homework must _______ on time.A. finishB. be finishC. be finishedD. finished（）10. Was a car invented _____ March 4, 1876?A. onB. inC. atD. of（）11. The man is made _____ some extra hours.A. workB. to workC. workedD. working（）12. This is my new pen. It _______me 18 yuan.A. costB. spentC. paidD. took（）13. When __________ the car __________?A. did, inventB. was, inventedC. does, inventD. is, invented（）14. A talk on Chinese history ___________ in the school hall next Tuesday.A. be givenB. has givenC. will be givenD. will give （）15. The number of teachers in our school ________ 60 and a number of them ________ male teachers.A. is; areB. are; isC. am; areD. be; are （）16. Please take the medicine three times a day, __________ it won’t work well.A. andB. butC. orD. so（）17. The boy was often seen __________ on the sports ground.A. to playB. playC. playedD. to playing（）18. Gilbert __________ electricity, but Edison ________ the light bulb.A. discovered; createdB. invented; discoveredC. found; createdD. discovered; invented（）19. He found ________ very difficult ___________ the math problem.A. that; to solveB. this; solvingC. himself; solveD. it; to solve（）20. Now many Chinese farmers like traveling from one place to _________ to enjoy the beautiful views of our country.A. otherB. othersC. the othersD. another四、完型填空.( 15分)Jack was a rich young man. One day, he was ___31___ very happily down a street. Suddenly from his car came a terrible sound. He felt ___32___, so he stopped his car and looked around. He saw a child standing nearby with a few small stones in his hand. He jumped ___33___the car and found a dent (凹痕) in the door. He was so ___34___that he caught the boy and shouted at him, "Who are you? ___35___ did you throw a stone at my new car?" "Please, sir, please...I'm sorry! But I didn't know what else to do!" said the child. "I threw the stone ___36___ I wanted to get you to notice me. I need your ___37___!”Tears (眼泪) were running down the child's face. He said, "My brother ___38___ out of hiswheelchair (轮椅) and was almost under it. He is hurt and too ___39___ for me. Could you give me ___40___to get him back into his ___41___?"After hearing this, Jack was moved (感动) and ___42___to help him. He lifted the child's brother___43__back into his wheelchair. He looked over the boy carefully to make sure that he was OK. Then he watched the child ___44___his brother towards their home. Suddenly the child ___45___ and bowed (鞠躬) to him. Jack looked at the dent in his car and smiled. （）1A. walking B. riding C. jogging D. driving（）2A. excited B. interested C. surprised D. tired（）3A. into B. across C. over D. out of（）4A. happy B. sad C. angry D. sorry（）5A. Why B. How C. When D. Where（）6A. if B. because C. though D. while（）7A. money B. car C. help D. phone（）8A. fell B. got C. climbed D. pulled（）9A. difficult B. weak C. heavy D. thin（）10A. a hand B. a touch C. a pull D. a ring（）11A. car B. wheelchair C. house D. place（）12A. hurried B. preferred C. wanted D. planned（）13A. quietly B. gently C. calmly D. tightly（）14A. carry B. send C. take D. push（）15. A. cried out B. looked around C. turned around D. got up五、阅读理解（30分）(A)Life in the twenty-first century will be very different from life today. Between then and now many changes will take place, but what will the changes be?The population is growing fast. There will be a large number of people in the world and most of them will live longer than people live now.Computers will be much smaller and more useful, and there will be at least one in every home. And computer studies will be one of the important subjects in schools then.People will work fewer hours than they do now and they will have more free time for sports, watching TV and traveling. Traveling will be much easier and cheaper. And many more people will go to other countries for holidays.There will be changes in our food, too. Maybe no one will eat meat every day. Instead they eat more fruits and vegetables. People will be much healthier.Work in the future will be different, too. Dangerous and hard work can be done by robots. Because of this, many people will not have enough work to do. This will be a problem.（）1. There will be _________ in the future.A. small populationB. few changesC. more peopleD. few people （）2. In the future more people will _________.A. go to other countries for holidaysB. study at schoolC. will go earlierD. work for many hours（）3. People will prefer _________ to _________ in the future.A. fruits and vegetables; meatB. meat; fruits and vegetablesC. fruits and meat; vegetablesD. meat and vegetables; fruits（）4. The robots will do _________ in the future.A. all the workB. the dangerous workC. only houseworkD. the easy work for people（）5. Which of the following sentences is TRUE about the computer?A. It will be much bigger, so few people will use it.B. It will be much smaller and more useful for people. C. It will be smaller and not many people will use it.D. It will be bigger and a lot of people will use it.(B)An invention in front of your eyesWhat is the most important invention of all time? Is it the written word that helps us to record information? Is it the telephone that lets us talk to people from all over the world? Is it the car that lets us travel at great speeds to meet others? Umberto Eco, an Italian writer, thinks it is something quite different. He says the most important invention might be right in front of your eyes. He is talking about a simple pair of glasses. Modern eye glasses were invented around 1000 years ago. They were more than just a conventient way to read. Before glasses, writers, scientists or teachers who could not see properly had to memorizeeverything. After about ten years of poor eyesight, they could not remember well enough and could not work. Glasses meant that people could work into their old age. People who wanted to remember some information could write it down and read it. Eye glasses are one of the world’s greatest inventions and were probably worn by the people who designed the first telephones and cars.（）6. The invention of the written word is important because________.A. we need it to listenB. we need it to record informationC. we just need it to read （）7. The author thinks _____ is the greatest invention of all time in his passage.A. the telephoneB. the carC. simple pair of glasses（）8. Before glasses were invented, writers, scientists and teachers had to ____.A. memorize everythingB. write down everythingC. read everything（）9. What happened after glasses were invented?A. People could not remember well enoughB. People could not workC. People could write down some information and read it（）10. From this passage, we can know______.A. modern eye glasses were invented 100 years agoB. people who designed the first telephones and cars probably wore those glassesC. the author of this article is an American(C)Now some women are spending a weekend at Mother’s Camp（营地）. There, husbands and children are not allowed. Why would a woman want to take a vacation without her family? Some women say they need time to be alone.At Mother’s Camp a woman has room to herself. She can sleep, read or watch TV, and no one will bother her. No children will ask, “Mom, what’s for dinner?” No husband will say, “Oh, dear, I can’t find any clean socks.” In fact almost 50% of women in the United States work outside the home. Many of them work full-time and then come home to a second job-taking care of their homes and families. These working women say one of their biggest problems is housework.In the United States, working wives do about 75% of the housework. Many of their husbands say they want to help. But then they burn the rice or they can’t find the pans. They ask so many questions that their wives decide it is easier to do the job themselves. Some women go to Mother’s Camp just to get a break from housework. For two days they don’t cook, they don’t clean, they don’t look after their children and husbands. What do they do? They enjoy warm, sunny weather, walking, swimming or boating in a clear blue lake and sing songs around the campfire. They relax away from home. They have a really wonderful vacation at Mother’s Camp.（）11. From this passage we can see in the United States.A. women want to work outside the homeB. working wives do most of the houseworkC. husbands do as much housework as their wivesD. women do not like to stay at home with their families（）12. At Mother’s Camp, women can’t .A. watch TVB. read newspapersC. swim in the lakeD. bring their husbands and children（）13. Why would some mothers like to be alone? Because .A. they don ’t like their husbands and childrenB. they have to work full-timeC. they are too busy to relax themselvesD.they want a new life（）14. _______ is one of the biggest troubles for working wives in the United States.A. HouseworkB. Working outside the homeC. When to take a vacationD. Looking after their children（）15.What ’s the best title （标题）for this passage?A. Busy Working MothersB. Welcome to Mother ’s CampC. Mothers Relax Away from HomeD. Mothers in the US六、按要求完成下列句子(5)1. People believe that Bell invented the first telephone in 1876.(改为同义句)_______ ________ ________ that Bell invented the first telephone in 1876.2. They were invented by Julie Thompson( 对划线部分提问)________ ________ they invented _________?3. I was asked to play the piano .( 对划线部分提问)________ _______ you ________to do ?4. The water is used for watering the flowers (对划线部分提问)________ __________the water used for ?5. They stayed there until 11 o ’clock. (同义句)They _________ leave there _______11 o ’clock.The bicycle is one of the simplest yet most useful inventions in the world. What is most surprising is that it was not ___1___ earlier, although the great inventor Leonardo da Vinci had ___2___ pictures for bicycles and also __3___ flying machines and some other things. Those things were not produced ___4___ long after he died.A person riding a bicycle uses very energy ___5___ the bicycle move, and there is no pollution at all when you are riding. Even so, in __6___ countries, most people don ’t travel to work ___7___ bicycle. It is not ___8___ the bicycles are expensive or people feel ___9___ if they ride to work. It ’s because the number of cars on the roads becomes ___10___, it certainly becomes ___11___ to ride a bicycle. As a result, more people put ___12___ bikes away and go to work in their cars, and in this way, the situation is made more serious. Perhapsthe ___13___ way to make riding safer and more popular is to create paths ___14___ for bicycles, and to make it so difficult and expensive for drivers to take their cars into the city that they ___15___ back to use their bicycles.八、书面表达（15分）A) 雨伞也是我国一项古老的发表，请根据右表的内容，用被动语态写出5个句子a. ___________________________b. ___________________________c. ___________________________d. ___________________________e. ___________________________B) 请根据下表的内容，以How was the ball-point pen invented? 为题写一篇80词左右的短Notes: ball-point pen圆珠笔tanner制革工人refill再充填leak 漏How was the ball-point pen invented?_______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ __________________________________________。

九年级化学下册《第九单元溶液》单元检测卷(附答案)

九年级化学下册《第九单元溶液》单元检测卷(附答案) 一、单选题1．通过对溶液知识的学习，判断下列说法中正确的是A．将10%的硝酸钾溶液倒出一半，剩余溶液中溶质的质量分数仍为10%B．热糖水降低温度后有固体析出，则原热糖水一定是饱和溶液C．可以用冷却海水的方式得到氯化钠固体D．20℃时，氯化钠的饱和溶液，不能再溶解任何物质2．溶液与人们的生活息息相关，下列关于溶液的说法正确的是A．澄清石灰水是氢氧化钙的水溶液B．饱和溶液一定是浓溶液C．将100mL的生理盐水倒掉一半，剩余溶液的溶质质量分数减小一半D．升高温度可以将硝酸钾的不饱和溶液变为饱和溶液3．甲、乙两种不含结晶水的固体物质的溶解度曲线如图，下列说法中不正确的是A．t1℃时，50g甲的饱和溶液中溶解了10g的甲B．将t2℃甲、乙两种物质的饱和溶液升温至t3℃（溶剂的量不变），两种溶液中溶质的质量分数相等C．t2℃时，要使接近饱和的乙溶液达到饱和状态，可采用降温的方法D．分别将t2℃甲、乙两种物质的溶液降温至t1℃，可能都有晶体析出4．下列叙述错误的是A．能产生温室效应的气体有二氧化碳、一氧化碳、二氧化硫等B．元素周期表中第二周期共有8种元素C．用涂油的方法防止自行车链条锈蚀D．用洗涤剂乳化油脂除去餐具上的油污5．下列关于溶液的叙述正确的是A．溶液都是均一、稳定的液体B．溶液一定是无色的，且溶剂一定是水C．外界条件不改变，溶质不会从溶液中分离出来D．饱和溶液就是不能再溶解任何物质的溶液6．下列物质不属于溶液的是A．生理盐水B．冰水混合物C．医用酒精D．白醋7．75%的医用酒精（是指每100体积的医用酒精中含75体积的乙醇）可以杀死新型冠状病毒，下列说法不正确的是A．该医用酒精中的溶剂是水B．该医用酒精是均一的，稳定的C．100g该医用酒精中含乙醇75gD．乙醇和水混合后的体积小于二者体积之和8．与“饱和溶液”互推，下列有关叙述一定正确的是A．有晶体析出的溶液B．是浓溶液C．不能再溶解该物质的溶液D．混合物9．如图为M、N两种固体饱和溶液溶质的质量分数(C%)随温度(t)变化的曲线，下列说法不正确的是（）A．t1℃时，40gM放入60g水中形成饱和溶液B．M、N的饱和溶液从t2℃降温到t1℃，两溶液的溶质质量分数关系是：M=NC．80gN放入120g水中全部溶解，此时溶液的温度一定高于t1℃D．100gN的溶液，蒸发15g水、冷却至t1℃后得到10gN的晶体（不含结晶水），原溶液溶质的质量分数为40%10．有一瓶饱和溶液，在温度不改变的条件下，当溶液部分蒸发而有溶质析出时，则溶液A．变成不饱和溶液B．仍是饱和溶液C．溶质的溶解度变小D．溶质的溶解度增大11．下列有关对质量守恒定律的理解，正确的一项是（）A．将5g食盐和5g水混合制成10g食盐水，遵循质量守恒定律B．化学反应前后分子的总数一定不会发生变化C．5g硫和5g氧气充分反应后，生成物质量一定为10gD．镁条燃烧后固体质量增加，不遵循质量守恒定律12．下列有关溶液的说法中，正确的是A．溶液都是无色的B．将NaCl放入植物油中搅拌，能形成溶液C．将40%的NaOH溶液均分成两份，每份溶液的溶质质量分数都为20%D．溶液是均一稳定的混合物二、填空题13．（1）目前属于最清洁的气体燃料是____________；（2）金刚石和石墨性质存在明显差异的原因是______________；（3）A、B、C三种物质的溶解度曲线如图所示，根据如图给的信息回答问题：℃在t2℃时，A、B、C三种饱和溶液，降温到t1℃时仍然是饱和溶液的是____________；℃把C的不饱和溶液变成饱和溶液的方法有：加入溶质、蒸发溶剂、________________；℃在t2℃时，A饱和溶液的溶质质量分数是_______________（精确到0.1%）．14．如图是A、B两种固体物质的溶解度曲线。

完整版新人教版九年级第九单元精选练习题附答案

完整版新⼈教版九年级第九单元精选练习题附答案新⼈教版九年级第九单元精选练习题附答案Unit 9 I like music that I can dance to.第⼀课时Section A (1a ?2d)01 基础过关i.根据句意及汉语提⽰填写单词。

1. ______ ( 猜想) you won a prize. What would you do?2. If that's the ______ ( 实情)，we need more staff.3. The dress looks beautiful and feels _______ (光滑的).4. What do you usually do in your ______ ( 空闲的) time?5. There were two world _______ ( 战争) in the 20th century.n.⽤括号内所给单词的适当形式填空。

6. Feng Xiaogang is one of the best ______ (direct) in China.7. Jack is an _______ (Australia) boy and he comes from Sydney.8. Michael became an ______ (electricity) engineer when he was twenty －five years old.9. The Greens enjoy music that has great _______(lyric).10. Peter prefers ______ (swim) to playing basketball.川.单项选择。

( ) 11. —Do you often watch Man and Nature on TV?—Sometimes. It's an interesting program ，but I ______ Sports News.A. preferB. wantC. knowD. review( ) 12. —What kind of music do you like?—I like music ______ I can dance to.A. becauseB. whenC. whoD. that( ) 13. Mike likes going shopping with his friends in his _________ time.A .busy B. spare C. correct D. lively( ) 14.—What are you doing tomorrow ，Jane?A. Thank youB. It's rightC. I'm going to visit my grandmaD. You're welcome( ) 15. Karen likes music that she can sing _________ .A. along andB. along withC. alongD. withw.根据汉语意思完成句⼦，每空⼀词。

人教版九年级化学下册第九单元达标检测卷【名校试卷+答题版+解析版】

人教版九年级化学下册第九单元达标检测卷(时间：90分钟满分：100分)可能用到的相对原子质量：H—1C—12O—16S—32Cl—35.5K—39Fe—56 一、选择题(本大题有15小题，每小题3分，共45分。

每小题有四个选项，其中只有一个选项符合题意)1．(孝感中考)下列物质放入水中，能形成溶液的是（）A．面粉B．豆油C．大米D．食盐2．医用酒精中乙醇的体积分数为75%，它常用于皮肤和物体表面的杀菌消毒，可有效杀灭新型冠状病毒。

下列关于乙醇溶液说法错误的是（）A．乙醇溶液的溶剂是水B．乙醇溶液是均一的、稳定的C．乙醇溶液都是浓溶液D．医用酒精中乙醇的质量分数小于75%3．下列说法正确的是（）A．溶质都是固体B．乳化能增强乳浊液的稳定性C．均一、稳定的液体都是溶液D．搅拌可增大物质的溶解度4．向20 ℃时的100 g氯化钠饱和溶液中加入5 g氯化钠粉末，充分搅拌后静置，所得溶液的质量为（）A．105 g B．100 g C．95 g D．无法确定5．欲配制10.0 %的NaCl溶液50 g，部分操作如图所示，正确的是（）6．★某温度时，将20 g KNO3溶解在100 g水中恰好饱和，关于该饱和溶液的叙述正确的是（）A．m(溶质)∶m(溶剂)＝20∶120B．溶质的质量分数为20%C.升温后，溶质的质量分数增大D．降温后，有固体析出7．★将溶质质量分数为10%的某溶液100 g，分别作如下四种处理：①蒸发掉10 g水且无晶体析出；②加入10 g同样的溶液；③加入10 g同种溶质，使之全部溶解；④加入10 g水，搅拌使其混合均匀。

经四种方法处理过的溶液中，溶质的质量分数由大到小的顺序是（）A．④＞③＞②＞①B．③＞①＞②＞④C．①＞③＞②＞④D．③＞②＞①＞④8．下表是某同学的实验记录，以下说法不正确的是（）高锰溶质碘酸钾溶剂水汽油酒精水汽油溶解性不溶易溶可溶易溶不溶A.衣服不慎沾上碘酒，可用汽油擦洗B．溶液都是均一、稳定、无色的混合物C．水、汽油、酒精都可以作溶剂D．同一物质在不同溶剂中溶解性不同9．夏季，鱼虾养殖池内常设置一些水泵，把水喷向空中。

九年级英语第九单元试题及答案

九年级英语第九单元试题及答案I. 单选题每小题2分，共40分1. This is the book I told you about. Is it interesting one?A. aB.anC.theD.不填2. I early in the morning when I was still a child.A.am used to get upB. used get upC. use to get uped to get up3. If I you, I the job.A.am, will takeB. was, would takeC. were, would takeD. are, will take4. ---May I go out now, Dad?---No, You let your mother know first.A.canB. MayC.can’tD.must5. ---Look! The woman standing there is Mrs Green.---It be Mrs Green, she has been to England.A. mayB.canC. can’tD. mustn’t6. Mary isn’t in the classroom. Do you know ?A.where she isB.where is sheC.who is sheD. who she is7. Some of us play, some sleep and eat.A.whenB. whileC. whatD.which8. This kind of pot keeping tea hot.A.is used inB.is used fored ined for9. Shopping makes me .A. RelaxedB.to relaxingC.to relaxD.relaxing10. ---My parents are always strict with me.---Don’t be angry. You’ll understand them .A.any timeB.in a hurryC.in factD.one day11. The city has improved a lot I came here a few years ago.A.forB.butC.becauseD.since12.---Do you know Bob?---I’m sure I’ve seen him , but I can’t remember the right place.A.anywhereB.somewhereC.nowhereD.everywhere13. It’s mount Tai lies in Shandong province.A.thatB.whoC.whatD.where14.---Let’s discuss the plan, shall we?--- Not now. I to an interview.A.goB.wentC.am goingD.was going15. The postcard often reminds me my good friend.A.ofB.forC.atD.with16. The market isn’t far from here. It’s only bicycle ride.A.half an hours’B.half an hour’sC. half an hourD.an hour and a half17. I was in a western restaurant for the first time. I didn’t know whatI do.A. was supposeB. was supposed toC. was supposingD. was supposing to18. Listening is just as as speaking in language learning.A.importantB.more importantC.most importantD.the most important19. ---What a traffic jam! I’m going to be late again.---Yes. The traffic now is than it used to be.A. even betterB. a bit goodC. even worseD. a bit bad20. These problems are hard to . Will you give me some advice?A.work outB. look outC. hand outD.break outII. 完形填空每空1分，共10分In learning English, one should first pay attention to listening and speaking. It is the ground work of reading and writing. You’d better 21 your best to speak while you do much listening. Don't be 22 of making mistakes.But be careful not to let them stop you from improving your 23 . While you are doing this, a good 24 is to write---keep a diary, write notes or letters. Then if you can, ask some others to go through 25 you have written and tell you where there is a mistake. Many mistakes in your speaking will be 26 found when you write. Through correcting the mistakes, you can do better in learning English.If you are slow in speaking, don't 27 about it. One of the helpful ways is reading, either aloud or to yourself. The important thing is to choose 28 interesting to read. It needn’t be too difficult for you. When you are reading 29 this way, don't stop to 30 the words if you can guess their meanings when they have nothing to do with the sentence. You can do that some other time.21.A. have B.send C.make D.try22.A. sure B.afraid C.proud D.tired23.A. English B.Chinese C.Japanese D.French24.A.start B.idea C.way D.manner25.A. how B.when C.why D.what26.A.happily B.easily C.really D. slowly27.A.talk B.fear C.worry D.hurry28.A.something B.everything C.anything D.nothing29.A.of B.on C.at D. in30.A.look at B.look for C.look up D.look overIII. 阅读理解每题2分，共30分AAt school many things happen to us. We may feel excited when we have success in a school play. We may feel sorry if we lose an important game. We want to keep the memory for the rest of our lives.How to keep the memory? Our English teacher, Miss Wang, has taught us a good way of remembering things to make our own yearbook. What is a yearbook? A yearbook is a kind of book which is used to keep the memory of exciting moments. It's usually made at the end of the year.Last December, we began to make our yearbook. First we chose the persons who had done something special, then some students interviewed 采访 them, some wrote down their stories, others took photos of them. Everyone in our class had something to do. Finally our teacher helped us to put the things together. We had our first yearbook.All of us put a lot of love into making the yearbook. It is so wonderful that not only the students but also our parents and teachers will remember the special time for ever.31.We may feel ______if we lose an important game.A. sorryB. happyC. excitedD. interested32. Who has taught us a good way of remembering things to make our own yearbook?A. Miss Yang.B. Miss HuangC. Mr WangD. Miss Wang.33. A yearbook is made to ______.A. take notesB. keep the memoryC. do our homeworkD. remember English words34. A yearbook is usually made ______.A. at the beginning of the yearB. at the middle of the termC. after the first exam in a termD. at the end of the year35. Finally______helped us to put the things together.A. our parentsB. our brothersC. our teacherD. our friendsBSoon computers and other machines will be able to remember you by looking at your eyes! The program works because everyone’s eyes are different. So in the future you won’t have to remember a number when you want to use a machine or take money out of a bank. You’ll just have to look at the machine and it will be able to tell who you are.The eye-recognition眼睛识别 program is already being tested in shops and banks in the USA, Britain and France. Soon, this technology技术 will changeall other ways of finding out who people are.However, scientists are working on other systems. Machines will soon be able to know you from the shape of your face or hands or even your smell! We already have machines that can tell who you are from your voice or the mark made by your fingers.Eye-recognition is better than other kinds because your eyes don’t change as you get older, or get dirty like hands or fingers. And even twins have different eyes, so the program can be up to 94% correct, depending on依靠 how good the technology is. Some programs may o nly be right 51% of the time. In Britain, it was found that 91% of people who had tried it said that they liked the idea of eye-recognition.In the future your computer will be looking at you in the eye. So smile!36.The eye-recognition program has already been tested in in a few countries.A.shops and banksB.libraries and schools.C.banks and schoolsD.hospitals and hotels37.How does the eye-recognition program work?A.You type a number.B.You look at the machine.C. The machine listens to your voice.D.You need to walk with the machine.38.We already have machines that can tell who you are from .A. your eyes or your smellB.your face or your voiceC.your face or your foot printD.your voice or the mark made by yourfinger39.The eye-recognition program can be up to correct, depending on how good thetechnology is.A.51%B.14%C.94%D.49%40.Which of the following is true?A.Eye-recognition program has already been tested in the USA.B.Smell-recognition will take the place of all other ways of finding out who people are.C.51% of people like the idea of eye-recognition program.puters can remember you by looking at your clothes.CWe have known for a long time that flowers of different plants open and close at different time of day. Yet no one really understands why flowers open and close like this at particular times. It is not as simple as we might think, as new experiments have shown. In one experiment, flowers were kept in darkness. We might expect that the flowers, without any information about the time of the day, did not open as they usually do. In fact, they continued toopen at their usual time. This shows that they have some mysterious 神秘的 way of knowing the time.Their sense of time does not depend on information from the outside world; it is, so to speak, inside them, a kind of “inner clock”. This discovery may not seem to be very important. However, it was later found that not just plants but also animals inc luding man have this “inner clock”which controls working of their bodies and their activities.Human beings, then, are also controlled by this mysterious power. Whether we wish it or not, it affects such things in our life as our need for sleep, our need for food. And our ability to concentrate集中.41.One experiment was done for finding out .A.when different flowers open and closeB.if flowers have a mysterious way of knowing the timeC.how flowers are used to tell the time in the darknessD.why flowers open and close at particular time42.Before the experiment arrived at a conclusion, people had thought that the flowers .A.would never open in darknessB.would change their usual time to openC.would continue to open at their usual timeD.would open earlier than the usual time43.That flowers have the sense of time is related to .A.sunlightB.weak lightC.the “inner clock”D.the information from the outside world44.From the passage, we know that do n’t have mysterious power inside.A.wild animalsB.human beingsC.all creatures生物D.lifeless things45.We may know that if we make good use of the ‘inner clock’, .A.we will have more strength to do our work.B.clocks or watches are no longer useful to usC.we will be able to live as long as we wish toD.human beings will need less sleep, less food or less m ovementIV. 任务型阅读10分When people want to find something on the Internet, they oftensay,“Let’s Google it!”It means “Let’s search for it on the Internet!”It all began in the summer of 1995, Larry Page, 24, and Sergey Brin, 23, met at Stanford University. In their project, the two students came up with a plan to make a new search engine引擎. They founded成立Google a year later. It became a company on September 7,1998.Google is not the first search engine, but it is certainly the most successful. Google’s worldwide market share市场占有率was as high as 82.8 percent last year, according to Marketshare. HitslinkBefore Google,search engines ranked 排名 websites simply by how many times the webpage has been visited. Page and Bin used a completely different way, by the number of other websites that linked链接 to that site. Google helps people find the most important site that connects to their key words.As popular as Google in the English world, in China, Baidu is the most popular and biggest search engine. It held a market share of nearl y 80 percent for web search in 2021.Baidu was started in 2000 by Li Yanhong and Xu Yong. It offers searchesfor website, audio, images...It also provides the largest online Chinese encyclopedia百科全书，Baidu Baike.46题为判断正误“T”表示正确，“F”表示错误;47题完成句子;48题简略回答问题;49题找出下面句子的同义句;50题将文中画线句子译成汉语。

第九单元溶液检测试卷--2021-2022学年九年级化学人教版下册(word版含答案)

人教版九年级化学下册第九单元检测试卷含答案可能用到的相对原子质量:C:12 H:1 O:16 Na:23 Cl:35.5一、选择题(每小题只有一个选项符合题意,每小题1分,共14分)1.下列物质不属于溶液的是( )A.碘酒B.矿泉水C.白醋D.蒸馏水2.下列有关溶液的说法正确的是( )A.面粉与水混合可形成溶液B.溶液中的溶质都是固体C.溶液中可以含有多种溶质D.无色透明的液体都是溶液3.下列物质溶于水的过程中,溶液温度会明显降低的是( )A.氯化钠B.硝酸铵C.浓硫酸D.氢氧化钠4.生活中的下列现象,不能说明气体的溶解度随温度的升高而减小的是( )A.烧开水时,水沸腾前有气泡冒出B.喝下汽水时,感觉有气体冲到鼻腔里C打开啤酒瓶盖时,有大量的泡沫溢出D.夏季午后池塘里的鱼常跃出水面5.日常生活中除去油污的方法很多,下列现象不属于乳化的是( )A.修车工用汽油洗去手上的油污B.用洗发液洗去头发上的油脂C.用洗面奶洗去皮肤上的油脂D.用洗洁精洗去餐具上的油污6.能证明20℃时某硝酸钾溶液已达到饱和的方法是( )A.保持溶液温度不变,继续加不同溶质,观察能否继续溶解B.温度不变时,向溶液中加入少量硝酸钾固体,固体不再溶解C.取少量该溶液蒸发水分有少量固体析出D取少量该溶液降温至10℃有少量固体析出7.传统“陈醋”生产过程中有一步称为“冬捞夏晒”,是指冬天捞出醋中的冰,夏日曝晒蒸发醋中的水分,以提高醋的品质,假设用醋酸的质量分数为3%的半成醋,生产5085.4%的优级醋,过程中醋酸没有损失,则捞出的冰和蒸发的水的总质量为( )A.500gB.400gC.200gD.100g8.规范的实验操作是实验成功的关键。

下列配制20g10%的氯化钠溶液的操作中不规范的是( )9.在一定温度下,某固态溶质(不含结晶水)的水溶液甲,经历如下变化:溶液甲,蒸发5g水后无晶体析出,得到溶液乙;溶液乙,蒸发5g水析出2g晶体,得到溶液丙。

人教版九年级下册化学第九单元检测试卷(含答案)

人教版九年级下册化学第九单元检测试卷（含答案）一、单选题1．遵义人民常见的下列饮食中，属于溶液的是（）A．豆花面B．茅台酒C．“老干妈”油辣椒D．酸汤鱼2．在水中能形成溶液的物质是（）A．氢氧化钠B．碳酸钙C．铁粉D．花生油3．如图是甲、乙两种固体物质的溶解度曲线．下列说法错误的是（）A．10℃时，甲和乙的溶解度相等B．甲的溶解度受温度影响比乙大C．将30℃时甲的饱和溶液降温至10℃，有晶体析出D．20℃时，将25g甲加入50g水中，可形成75g溶液4．下列叙述中，正确的是（）A．物质的溶解过程通常会伴随着能量的变化B．溶液都是无色透明的液体C．配制溶液时，搅拌可以增大固体物质的溶解度D．60℃时硝酸钾的溶解度为110g，其溶液中溶质与溶剂的质量比为11：21 5．用下列物质清洗油污的原理属于乳化作用的是（）A．水B．酒精C．汽油D．洗涤剂6．如图是甲、乙两种固体物质的溶解度曲线，下列说法正确的是（）A．20℃时，甲、乙两种固体物质的溶解度都是30gB．40℃时，甲的饱和溶液中溶质质量分数为50%C．40℃时，将50g乙物质全部溶于水中，恰好能得到100g乙的饱和溶液D．130g20℃乙的饱和溶液升温到40℃，最多还能溶解20g乙7．在温度不变的条件下，下列欲使溶质的质量分数变为原来2倍的方法，最可行的是（）A．将20g硝酸钾饱和溶液蒸发掉10g水B．将20g硝酸钾不饱和溶液蒸发掉10g水C．.在10g10%的硝酸钾溶液中，加入5g40%的硝酸钾溶液D．将10g硝酸钾不饱和溶液中加入10g硝酸钾固体8．如图是甲、乙、丙三种固体物质的溶解度曲线。

下列叙述正确的是()A．t1℃时，乙物质的溶解度大于丙B．t2℃时，20g丙能溶解于50g水中形成70g溶液C．若要将N点的甲溶液转变为M点的甲溶液，可采取恒温蒸发溶剂的方法D．将t3℃时甲、乙、丙三种物质的饱和溶液降温至t2℃，所得溶液溶质质量分数的大小关系为乙>甲=丙9．将少许食盐投入到一杯水中，食盐逐渐溶解，水变咸了．若将水温提高，再投入食盐，食盐能继续溶解，且溶解速率加快，通过上述现象，可以得出的结论不正确的是（）A．食盐的溶解度受温度影响不大B．温度升高微观粒子运动速度加快C．微观粒子间是有间隔的D．温度升高，食盐的溶解度增大10．下列溶液中，溶剂是酒精的是（）A．蔗糖溶液B．酒精溶液C．碘酒D．氯化钠溶液11．下列有关溶液的说法中，正确的是（）A．洗剂精可以溶解食用油B．均一、稳定的液体都是溶液C．溶质都以分子形式溶解在溶剂里D．氢氧化钠溶于水，使溶液的温度升高12．氯化铵和硝酸钾溶解度曲线如图5所示，下列叙述正确的是A．60℃时，硝酸钾的溶解度小于氯化铵的溶解度B．40℃的硝酸钾饱和溶液降低温度会变为不饱和溶液C．t ℃时，氯化铵饱和溶液与硝酸钾饱和溶液的溶质的质量分数相等D．60 ℃时，100g水中加入120g硝酸钾，充分搅拌，得到的是硝酸钾不饱和溶液二、填空题13．甲、乙、丙三种固体物质的溶解度曲线如图所示。

人教版初中九年级化学下册第九单元《溶液》测试题(含答案解析)

一、选择题1．化学概念之间在逻辑上存在并列、交叉和包含等关系。

下列各图中概念之间关系不正确的是( )A．B．C．D． A解析：AA、物质分为混合物和纯净物，混合物是由两种或两种以上的物质组成，因此混合物与纯净物属于并列关系，不是交叉关系，错误符合题意，故选项正确；B、由两种或两种以上的元素组成的纯净物叫化合物。

氧化物是指由两种元素组成的化合物中，其中一种元素是氧元素，因此它们之间属于包含关系，正确但不符合题意，故选项错误；C、化合反应是有两种或两种以上的物质生成一种物质的化学反应，氧化反应是物质与氧发生的化学反应，因此它们是交叉关系，正确但不符合题意，故选项错误；D、溶液分为饱和溶液与不饱和溶液，饱和溶液与不饱和溶液是并列关系，正确但不符合题意，故选项错误；故选：A。

2．常温下，对100mL氯化钠饱和溶液进图示实验。

下列分析错误的是A．实验1后，甲、乙中溶液的溶质质量分数相等B．实验2后，甲中溶液为氯化钠的不饱和溶液C．实验2后，甲、乙中溶液的溶质量分数相等D．实验2后，甲、乙中溶液所含溶质质量相等C解析：CA、溶液具有均一性，故实验1后，甲、乙中溶液的溶质质量分数相等，故A分析正确，不符合题意；B、实验2后，甲中溶液为氯化钠的不饱和溶液正确，因为加入了溶剂，故B分析正确，不符合题意；C、实验2是常温下向氯化钠的饱和溶液中继续加入5g氯化钠，温度不变，溶解度不变，故加入的氯化钠不能溶解，乙中溶液溶质质量分数不变，甲中溶液溶质质量分数变小，故C分析错误，符合题意；D、实验2后，甲、乙中溶液所含溶质质量相等正确，因为甲中加水，溶质不变，乙中的加溶质不再溶解，因此甲、乙中溶液所含溶质质量相等，故D分析正确，不符合题意。

故选C。

3．下列关于水和溶液的说法不正确的是A．蔗糖溶于水可形成溶液B．溶液由溶质和溶剂组成，所以溶液一定是混合物C．将10%的KNO3溶液倒出一半，剩余溶液中溶质的质量分数为5%D．改变条件，能够使饱和溶液与不饱和溶液相互转化C解析：CA、蔗糖溶于水可形成溶液，溶质是蔗糖，溶剂是水，故A说法正确；B、溶液由溶质和溶剂组成，特征是均一稳定的混合物，故B说法正确；C、溶液具有均一性,将10%的KNO3溶液倒出一半，剩余溶液中溶质的质量分数为10%，故C不正确；D、饱和溶液与不饱和溶液可以相互转化，故D说法正确。

2020年人教版九年级化学下册第九单元《溶液》测试题(含答案)

第九单元《溶液》测试题一、单选题（每小题只有一个正确答案）1．下列生活中的现象，溶质的溶解度无变化的是（）A．揭开啤酒瓶盖，有大量气泡溢出B．烧水时，沸腾前有较多小气泡C．加足量白糖，热糖水比凉糖水甜D．食盐加入水中无明显变化，搅拌后完全溶解2．常温时打开汽水瓶，可以看到许多气泡从瓶口冒出，这是因为（）A．温度降低，溶解的二氧化碳外逸B．温度升高，溶解的二氧化碳外逸C．压强增大，溶解的二氧化碳外逸D．压强减少，溶解的二氧化碳外逸3．生活中常见的下列物质，不属于溶液的是（）A．糖水 B．碘酒 C．雪碧汽水 D．蒸馏水4．下图表示一定质量的高锰酸钾受热过程中，某变量y随时间的变化趋势。

纵坐标表示的是A．固体中氧元素的质量B．生成O2的质量C．固体中锰元素的质量分数D．固体中钾元素的质量5．下列物质中含有自由移动离子的是（）A．高锰酸钾固体B．铁C．氖D．氯化钾溶液6．把克的硝酸钾溶液稀释至克，则稀释后溶液中含硝酸钾的质量是（）A．克 B．克 C．克 D．克7．即食即热型快餐的内层是用铝箔真空包装的食物，外层则分别包装两包物质，使用时拉动预留在外的拉线，使这两种物质反应，便可对食物进行加热，这两包物质最适合的选择是( )A．硝酸铵晶体与水 B．生石灰与水 C．浓硫酸与水 D．氯化钠与水8．已知t℃时，氯化钾的溶解度为40g。

在该温度下，将25g氯化钾固体加入到50g水中，充分溶解，形成的溶液中溶质的质量分数为（）A．25% B．28.6% C．33.3% D．50%9．将200g含水99%的食盐溶液的含水量变为98%，应蒸发掉水（）A．1g B．2g C．50g D．100g10．配制生理盐水时，导致其溶质质量分数偏小的原因可能是①将称好的氯化钠固体转移到烧杯中时，有少量溢出；②用量筒量取水时，将量筒举过头顶读数；③溶解过程中未用玻璃棒搅拌；④盛装生理盐水的试管刷洗后未干燥．A．仅①④B．仅②③C．①②④D．①③④11．如图是A、B、C三种物质的溶解度曲线，下列说法错误的是（）A．t1℃时，A、B、C的饱和溶液恒温蒸发等质量的水，析出晶体质量: B>A=CB． t1℃时，物质C饱和溶液的溶质质量分数为20%C．A中混有少量C时，应采用降温结晶的方法提纯AD．将t2℃时的物质A、B饱和溶液降温到t1℃时，两溶液的溶质质量分数: A>B 12．人类的日常生活和工农业生产离不开水，下列说法正确的是( )A．无法用水鉴别硝酸铵、氢氧化钠两种固体B．用水浇灭着火的纸箱，其原理是移除了可燃物C．天然水经过自然沉降、过滤、吸附，即得纯水D．使用加有洗涤剂的水可去除衣服上的油污13．下列是小强同学对有关知识的总结，其中完全正确的一组是（）A生活中的化学B物质的结构①新装修屋内主要污染物﹣﹣甲醛②形成酸雨的罪魁祸首﹣﹣CO2③煤气中毒的原因﹣﹣CO ①氯化钠是由氯化钠分子构成的②金刚石是由金原子构成的③氮气是由氮分子构成的C化学中的守恒思想D物质的俗称①加水稀释前后溶液的溶质质量不变②化学反应前后元素的种类和质量都不变①Na2CO3：小苏打②C2H5OH：酒精③参与反应物质总质量等于生成物总质量③CaO：熟石灰A．A B．B C．C D．D14．将相同质量的甲、乙两种不同溶质的溶液同时蒸发掉10 g水，并冷却到t ℃时，分别析出2g甲和3g乙物质（均不带结晶水），则下列说法中正确的是（）A．t ℃时，甲、乙两种物质的溶解度可能相同B．t ℃时，甲物质的溶解度一定大于乙C．t ℃时，甲物质的溶解度一定小于乙D．将析出晶体后的甲、乙两种饱和溶液混合后（甲、乙不反应），溶液仍饱和15．下列图像能正确反映对应变化关系的是（）A 20℃时，向一定量的硝酸钾不饱和溶液中加入硝酸钾固体B将等质量的镁片和铝片投入到足量稀硫酸中C用酒精灯加热一定量的高锰酸钾固体D向盛有少量二氧化锰的烧杯中不断地加入过氧化氢溶液A．A B．B C．C D．D二、填空题16．生活和化学联系密切：（1）防毒面具里的活性炭除去毒气是利用活性炭具有_____。

人教版九年级下册化学第九单元溶液基础知识检测(含答案)

第九单元溶液一、选择题1. 溶液在生产，生活中应用广泛．下列有关溶液的说法正确的是（）A. 均一、稳定的液体都是溶液B. 溶液中不能同时存两种溶质C. 溶液都是无色透明的D. 外界条件不改变，溶质溶剂不会分离2. 下列调味品加入适量水后不能形成溶液的是（）A. 食用油B. 食盐C. 味精D. 蔗糖3. 夏天，实验员在实验室里配制了一瓶饱和的硝酸钾溶液并密封放置，到了冬天发现瓶底有大量的晶体析出。

这是因为（）A. 溶液中溶剂质量减小B. 变成了不饱和溶液C. 温度下降，硝酸钾溶解度减小D. 溶液中溶质质量增加4. 一杯硫酸铜溶液实验测得其上层密度为a g/mL．其下层密度为b g/mL 则a、b的关系为（）A. a=bB. a＜bC. a＞bD. 无法比较5. 氯化钾的溶解度曲线如图所示，下列说法正确的是（）A. 升高温度可使接近饱和的氯化钾溶液变为饱和溶液B. 10℃时，65.5g氯化钾的饱和溶液中加入5g氯化钾，充分溶解后将温度升高到40℃，得到70g氯化钾饱和溶液C. 50g水中加入20g氯化钾充分溶解，形成氯化钾饱和溶液D. 40℃时，氯化钾饱和溶液中溶质的质量分数为40%6. 一杯食盐溶液，其上层、中层、底层的密度分别为ρ1、ρ2、ρ3（）A. ρ1=ρ2=ρ3B. ρ1>ρ2>ρ3C. ρ1<ρ2<ρ3D. 无法确定7. 小龙同学在工具书中查到NaOH在水和酒精中的溶解度（见表）。

通过分析他得出以下结论，其中错误的是（）A. 温度和溶剂种类对NaOH的溶解度都有影响B. NaOH易溶于水，也易溶于酒精C. 40℃，40gNaOH溶解在l00g酒精中达到饱和D. 将等质量40℃的饱和NaOH水溶液和饱和NaOH酒精溶液降温至20℃，析出的晶体前者比后者多8. 下列有关溶液性质的说法中错误的是（）A. 溶液一定是无色、透明的混合物B. 溶液加水稀释前后溶质的质量不变C. 食盐水能导电是因为食盐水中含有较多自由移动的离子D. 海水是盐溶液，所以冬天海水不易结冰9. 某同学整理归纳得出的一些规律合理的是（）A. 溶液中的溶剂一定是水B. 酸、碱中一定含有氧元素C. 不能使酚酞变红的溶液一定是酸溶液D. 同种物质分子间的间隔，气体一定比液体大10. 下列有关溶液的说法正确的是（）A. 不饱和溶液转化为饱和溶液溶质的质量分数一定变大B. 同种溶质的饱和溶液一定比它的不饱和溶液溶质的质量分数大C. 饱和溶液转化为不饱和溶液溶液的质量一定增大D. 饱和溶液恒温蒸发部分溶剂后溶质的质量分数一定不变11. 如下图是a、b两种固体物质（不含结晶水）的溶解度曲线。

人教版九年级化学全一册第9单元溶液测试题含答案及解析

人教版九年级化学全一册第九单元溶液1.(2021湖南邵阳中考)下列有关溶液的说法错误的是()A.溶液是均一、稳定的混合物B.溶液中的溶质可以是固体、液体或气体C.饱和溶液一定是浓溶液,不饱和溶液一定是稀溶液D.洗涤剂能洗去衣服上的油污,原因是洗涤剂具有乳化作用答案:C2.(2021江苏连云港中考)向盛有等质量水的甲、乙、丙三个烧杯中分别加入15 g、30 g、30 g蔗糖固体,充分搅拌后静置,现象如图所示。

下列说法正确的是()A.可采用升温的方法使乙烧杯中剩余的固体溶解B.甲、丙烧杯中的溶液一定属于不饱和溶液C.乙、丙烧杯中溶质的质量分数相等D.蔗糖的溶解度随温度的升高而减小答案:A3.(2020贵州毕节中考)下列关于如图所示实验的相关判断错误的是()A.固体X可能是NaOHB.固体X可能是NH4NO3C.Ca(OH)2的溶解度:①>②D.Ca(OH)2的质量分数:①=③答案:B4.(2019四川自贡中考)实验室用氯化钠固体配制100 g溶质质量分数为8%的氯化钠溶液,下列说法中错误的是()A.实验的步骤为计算、称量、量取、溶解B.量取水时,用规格为100 mL的量筒C.若用量筒量取水时俯视凹液面的最低处,则配制溶液的质量分数小于8%D.溶解过程中玻璃棒搅拌的作用是加快氯化钠的溶解答案:C5.(2020山东威海中考)氢氧化钠和碳酸钠的溶解度如表所示。

下列有关分析和推理不正确的是()A.氢氧化钠易溶于水和酒精B.温度相同,同种物质在不同溶剂中溶解度不同C.40 ℃碳酸钠饱和水溶液中溶质质量分数为49%D.20 ℃时,将足量二氧化碳通入饱和氢氧化钠酒精溶液中,溶液变浑浊答案:C6.(2019浙江金华中考)甲是60 ℃的蔗糖溶液,按如图所示进行操作。

以下分析错误的是()A.甲一定是不饱和溶液B.丙和丁一定是饱和溶液C.乙的溶质质量分数一定比甲大D.甲和丙的溶质质量分数一定不相等答案:D7.(2021青海中考)硝酸钾的溶解度曲线如图所示,将100 g 60 ℃的硝酸钾饱和溶液分别进行如下操作,所得溶液与原溶液相比,变化结果全部正确的是()答案:C8.(2019天津中考)溶液与人类生产、生活密切相关。

人教版九年级化学第九单元测试题(附答案)

人教版九年级化学第九单元测试题（附答案）学校:___________姓名：___________班级：___________考号：___________一、选择题．．．的是A．15℃时，a、b的溶解度均为20 gB．加水或升温均可使b的饱和溶液变为不饱和溶液C．将30℃时a的饱和溶液降温至15℃，溶质的质量分数不变D．分别向100 g水中加入20 g a和b，升温至30℃，所得溶液均为饱和溶液2.下列物质放入水中，能形成溶液的是A．牛奶 B．食盐 C．面粉 D．植物油3.4.A．实验中用到的玻璃仪器有烧杯、量筒、玻璃棒和胶头滴管B．用电子天平称量所需硝酸钾的质量3.0gC．用25mL量筒量取所需水的体积D．实验步骤是计算、称量和量取、溶解5.下列物质加入水中搅拌后，能形成溶液的是（）A．泥土 B．蜡烛 C．蔗糖 D．花生油6.浓硫酸和浓盐酸敞口放置在空气中一段时间后，溶液中（）A．溶质的质量分数都变小B．溶液的质量都增大C．溶质的质量分数都变大D．溶质的质量分数前者变大，后者变小7.下列实验现象描述正确的是（）A．镁条在空气中燃烧，发出耀眼的白光，生成白色固体B．硫在氧气中燃烧，产生淡蓝色火焰，生成有刺激性气味的气体C．细铁丝在空气中剧烈燃烧，火星四射，生成四氧化三铁D．硝酸铵晶体溶解于水，形成的溶液温度明显升高8.小明在做家庭小实验时，把下列物质分别放入适量水中并充分搅拌，其中不能得到溶液的是（）A．面粉 B．纯碱 C．食盐 D．白酒9.海水晒盐过程中，析出粗盐后剩余的溶液成为“苦卤”，关于苦卤的下列说法不正确的是（）A．苦卤是氯化钠的饱和溶液 B．苦卤中氯化钠的质量分数比海水中的大C．苦卤通电可以制的金属镁 D.苦卤也是一种重要的化工原料10.下列物质放入水中，能形成溶液的是（）A．牛奶 B．面粉 C．蔗糖 D．花生油11.下列物质中，属于溶液的是．冰水 D．糖水二、填空题6％的氯化钠溶液。

2019年人教版九年级英语上册-第9单元检测题附答案

九上英语Unit 9检测题满分：120分时间：120分钟听力部分(30分)一、听力测试(共四节)第一节听句子，选图画。

每个句子读两遍。

(5分)（B）1.（B）2.（A）3.（C）4.（B）5.第二节听下面短对话，选出最佳选项。

每段对话读两遍。

(5分) ( A)6.What are the speakers talking about?A．Music. B．Books. C．Movies.( C)7.What’s John’s hobby now?A．Reading.B．Traveling.C．Collecting stamps.( B)8.What does Susan think of music?A．It is boring. B．It is interesting.C．It is exciting.( B)9.What does John sometimes listen to?A．Pop music. B．Jazz music.C．Rock music.( B)10.What does Linda buy?A．Books about rock music.B．CDs about rock music.C．CDs about classic music.第三节听下面长对话，选出最佳选项。

每段对话读两遍。

(10分) 请听第1段材料，回答第11、12小题。

( B)11.Where has Peter been?A．He has been to India.B．He has been to Hong Kong.C．He has been to England.( A)12.What kind of music does Peter like?A．Quiet and traditional music.B．Modern music.C．Rock music.请听第2段材料，回答第13、14小题。

( C)13.What kind of instrument can the man play well?A．The guitar. B．The drum.C．The trumpet.( A)14.What do we know about the man?A．He likes music that he can sing along with.B．He doesn’t like rock music.C．He can play the guitar well.请听第3段材料，回答第15至第17小题。

人教版九年级化学第九单元《溶液》测试题及答案

人教版九年级化学第九单元《溶液》测试题及答案1.下列物质中属于溶液的是牛奶。

2.市场上有一种罐装饮料，在饮料罐的夹层中分别装入一种固体物质和水，饮用前摇动饮料罐使它们混合，罐内饮料温度就会降低，这种固体物质可能是食盐。

3.有一瓶密封保存长期放置的氯化钠溶液，下列说法正确的是瓶底附近的溶液较浓。

4.在一定温度下，向盛有氯化钠饱和溶液的烧杯中加入氯化钠晶体后，则晶体质量减少。

5.打开汽水瓶盖会有大量气泡冒出，产生这一现象的原因是二氧化碳的溶解度随温度降低而减小。

6.将20℃的硝酸钾饱和溶液升温至80℃时，溶液中溶质的溶解度减少。

7.生活中的洗涤问题大都与化学知识有关。

下列说法中不正确的是食醋能够除去热水瓶中水垢的原因是二者发生了化学反应。

8.（2012.孝感市）实验室要配制50g 10%的氯化钠溶液，其中操作方法不正确的是计算所需氯化钠的质量为5g，水的体积为45mL。

9.右图是甲、乙两种固体物质的溶解度曲线。

下列说法正确的是t℃时，甲、乙两物质的溶解度相等。

10.（2012．桂林市）保持温度不变，小心蒸发NaCl不饱和溶液（蒸发皿中始终有溶液），则溶液中溶质的质量分数（m%）与时间（t）的关系合理的是溶质质量分数随时间逐渐增加。

11.无需改写，删除明显有问题的段落。

12.改写为：关于溶液的下列说法，正确的是A、B、C，不正确的是D。

其中，蔗糖溶液是一种均一的、稳定的混合物；硝酸钾在20℃时的溶解度为31.6g，因此100g硝酸钾溶液中含有31.6g硝酸钾；在鱼池中设立水泵，将水喷向空中可以增加水中氧气的溶解量；但冷却或蒸发溶剂并不能使接近饱和的氯化钠溶液达到饱和。

13.改写为：在一定温度下，向右图所示的烧杯中加入一定量的水，只有部分晶体会溶解。

与原溶液相比，正确的说法是：溶剂的质量增加，溶液颜色变浅。

14.改写为：将80g质量分数为35%的浓盐酸稀释成10%的稀盐酸，需要加入200g的水。

15.改写为：正确的说法是B和D。