APChemistryJeopardy：AP化学危险

Physical Chemistry $200
When ∆H is positive and ∆S is negative, will temperature changes have an effect on the spontaneity of a reaction?
YES
NO
Physical Chemistry $400 The rate of reaction will be large if:
Physical Chemistry
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Chemical Bonding
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Chemical Reactions
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The Law of Dulong and Petit says that the molar specific heat of
solid elements is approximately 25 J/mol•K. This suggests that. . .
a) The heat absorbed depends only on the number of atoms
A
Chem Bond $2000
Why is the P-Cl bond in PCl5 a stronger bond than the C-O in carbon monoxide?
A) Increased Dipole - Dipole Forces B) Hydrogen Bonding C) Increased London Dispersion Forces
Nitrogen Oxygen Fluorine
Chem Bond $800
What are the two ways for a molecule to have a bent geometry?
A tetrahedral arrangement with two unshared electron pairs (~109.5°)
A) ∆G° is a large (-) number B) ∆S° is a large (-) number C) ∆H° is a large (-) number D) Keq is a large (+) number E) None of the above
Physical Chemistry $800
A planar triangle geometry with one unshared electron pair (~120°)
Chem Bond $1000
What are the four types of Unit Cells possible for crystal structures??
Physical Chemistry $1000
An inorganic catalyst doesn’t...
A) Ensure proper geometry B) Weaken existing bonds C) Lose effectiveness when heated D) Decrease the activation energy of a
q = m • c • ∆T
Physical Chemistry $2000
What is the equation is used to find how temperature changes affect rates of reaction?
ln k2 = Ea (T2 - T1)
k1
R T2•T1
with each other D) On average, heavier molecules move
more slowly E) Elastic collisions result in the loss of
energy.
States of Matter $1500 All of the following physical properties change as solute is added to the solution. Which is NOT a colligative property?
A) Boiling Point B) Vapor Pressure C) Osmotic Pressure
D) Surface Tension E) Melting Point
States of Matter $2000
Which of the following is most likely to be soluble in hexane?
A) one sigma, four pi B) two sigma, two pi C) three sigma D) three pi E) one sigma, two pi
Chem Bond $400
What are the the three atoms that bond to hydrogen in hydrogen bonding?
and 25°C D) the solid phase must be more dense than the liquid phase
States of Matter $400
What would happen to the pressure of a gas if the temperature is tripled, the volume is doubled, and the number of gas molecules is quadrupled ? . . . .
HSO4- is acidic because it can further produce H+ ions in solution (but it also has amphoteric properties).
A) the critical temperature must be below the triple point B) the slope of the fusion line should be negative C) the triple point must be at a pressure greater than 1 atm
Only ORGANIC catalysts are effected by a temperature change.
Physical Chemistry $1500
What equation would you use to solve:
How much heat does it take to raise 10 grams of water by 10°C? . . .
b) the heat absorbed depends on the volume change with temperature
c) the heat absorbed can be calculated from the 1st Law of Thermodynamics
d) this law is an oddity since it does not apply to elements that are liquids / gases
reaction
Catalysts lower the activation energy of a reaction thus increasing the rate by ensuring proper geometry and weakening existing bonds in the molecule.
96,485 C
Chemical Reactions $400
A molecule of NaHSO4 is . . . a) Acidic b) Basic c) Neutral
Na+ is neutral because it is the conjugate acid of a strong base.
AP Chemistry Jeopardy
2000
AP CHEM JEOPARDY
Structure of Matter
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States of Matter $100 $200 $400 $800 $1000 $1500 $2000
States of Matter $800
Is the slope for the solid/ liquid line in the phase diagram of water positive, negative, or can be either?
States of Matter $1000
Chemical Bonding $100B
DAILY DOUBLE
Chem Bond $100
Q - Which atom has a larger
atomic radius?A) Ar源自C) ClB) Na
D) Li
Chem Bond $200
Q - How Many Sigma and Pi bond does N2 contain?
Chemical Reactions $100
Which of the following would produce odor if heated?
A) NH3
D) PbI2
B) Na+(aq) E) A and C
C) KI
Chemical Reactions $200
One mole of electrons is how many coulombs?
The kinetic molecular theory predicts that at a given temperature...
A) All gases have the same KE B) All gas molecules have the same
velocity C) Only real gas molecules collide
A) KCl
D) H2O
B) C2H5OH E) C6H6
C) HC2H3O2
Physical Chemistry $100
What is the free energy of a system at
equilibrium? . . .
∆ G = 0 @ equilibrium
< 0 if spontaneous > 0 if non-spontaneous
Simple Cubic 2r = s Face centered 4r = 2 ( r) sqr. Root Body centered 4r = s ( r) cube root Hexagonal
Chem Bond $1500
Q - Which is NOT linear? a) CO2 b) H2O c) BeF2 d) N2
States of Matter $100
Which of the following is not a gas at room temperature?
A) O2
B) Ar
C) F2
D) Br2
Bromine is a red liquid
States of Matter $200
Under what conditions would a substance sublimate at room conditions (25 °C and 1 atm)?
A) T x (1/3)(1/2)(1/4) B) T x (3/1)(2/1)(4/1) C) T x (3/1)(1/2)(4/1) D) T x (3/1)(1/2)(1/4)
Temp. is tripled P = kT
Volume is doubled P=k(1/V)
Moles is quad. P = kn