Catalysts

Question 1

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

Revolt · Accepted Answer

A: The rate would increase.

Question 2

Which statement correctly describes a chemical reaction?

Revolt · Accepted Answer

C: Bonds between atoms break and reform.

Question 3

What is a substrate?

Revolt · Accepted Answer

D: a reactant that is catalyzed by an enzyme

Question 4

A student wants to create a liquid volcano. The student observes bubbles in the soft drink prior to opening it. The student first proceeds to open the soft drink bottle and place it on the floor.Next the student drops candy tablets into the drink at a continuous pace. The student notices a very powerful reaction in which the candies, still intact, are pushed out of the soda as the drink fizzes and starts to bubble.In this scenario, what would be the catalyst?

Revolt · Accepted Answer

A: The candy tablets being added to the drink.

Question 5

Which component is released from the active site of an enzyme during a chemical reaction?

Revolt · Accepted Answer

B: product

Question 6

Which is the best definition of activation energy?

Revolt · Accepted Answer

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

Question 7

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

Revolt · Accepted Answer

A: The catalyst decreases the activation energy needed.

Question 8

The lock-and-key mechanism refers to

Revolt · Accepted Answer

A: the complementary shapes of an enzyme and a substrate.

Question 9

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

Revolt · Accepted Answer

D: enzyme

Question 10

Which two substances bind using a lock-and-key mechanism?

Revolt · Accepted Answer

A: enzyme and substrate

Catalysts Answers

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