GenChem Q4 Quiz 1

Question 1

This is known as the catalyst in all living system.

Answer 1

Enzymes

Question 2

Which of the following statements best describes the Second Law of Thermodynamics?

Answer 2

For any spontaneous process, the entropy of the universe increase.

Question 3

When heat is added to a pure liquid, the temperature:

Answer 3

increases and the entropy increases

Question 4

For a spontaneous reaction:

Answer 4

Delta H - T(Delta S) must be negative

Question 5

A collision is considered ______ product formation

A. effective
B. ineffective
C. less effective
D. more effective

Answer 5

B. ineffective

Question 6

Condition that needs to be met for a chemical reaction to occur.

A. Substance must be homogeneous.
B. Temperature should be kept constant.
C. Particles should maintain a certain distance to each other.
D. Particles in the substance must collide and have enough
energy.

Answer 6

d. Particles in the substance must collide and have enough energy.

Question 7

Why does a candle burn more rapidly when placed in an open jar than in air? What accounts for this reaction?

A. Higher Oxygen concentration
B. Greater surface area of the jar
C. Increasing the surrounding temperature
D. Length of the candle

Answer 7

A. Higher Oxygen concentration

Question 8

Greater number of reactant molecules are more _____ at higher temperatures.

A. concentrated
B. heated
C. energetic
D. more effective

Answer 8

C. energetic

Question 9

This is a process of speeding up a reaction by using catalyst.

A. Catalysis
B. Inhibition
C. Reactions
D. Collisions

Answer 9

A. Catalysis

Question 10

This occurs when a catalyst and the reactants are in the same physical state.
A. Catalytic process
B. Heterogeneous catalysis
C. Enzymatic process
D. Homogeneous catalysis

Answer 10

D. Homogeneous catalysis