Catalysts - Quiz Quiz

Question 1

Lactase and carbonic anhydrase are examples of what type of substance?

Revolt · Accepted Answer

B: enzyme

Question 2

Which statement best describes how a catalyst can speed up a chemical reaction?

Revolt · Accepted Answer

B: The catalyst decreases the activation energy needed.

Question 3

Which is the best definition of activation energy?

Revolt · Accepted Answer

A: the energy required to form or break the bonds of reactant molecules

Question 4

Which statement correctly describes a chemical reaction?

Revolt · Accepted Answer

A: Bonds between atoms break and reform.

Question 5

How does a catalyst work?

Revolt · Accepted Answer

D: by decreasing the activation energy of a reaction

Question 6

Which statement best describes the amount of catalyst that remains at the end of a reaction?

Revolt · Accepted Answer

A: The amount of catalyst is the same at the end as at the beginning of the reaction.

Question 7

Photosynthesis is an example of

Revolt · Accepted Answer

D: an endothermic reaction.

Question 8

What must happen before a chemical reaction can begin?

Revolt · Accepted Answer

C: The activation energy must be reached.

Question 9

Which term describes an enzyme?

Revolt · Accepted Answer

C: catalyst

Question 10

If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?

Revolt · Accepted Answer

D: The rate would increase.

Catalysts - Quiz Quiz Answers