Rate of Chemical Reactions — Quiz

Question 1

Why is reaching activation energy necessary?

Revolt · Accepted Answer

Reactants require a minimum amount of energy to start to break a chemical bond.

Question 2

Food can spoil very quickly. Which methods are used to minimize the reactions that allow bacteria and fungi to grow?

Revolt · Accepted Answer

preservatives and low temperature

Question 3

Which describes a scenario that would most likely use an inhibitor?

Revolt · Accepted Answer

When at rest, the body stores sugar.

Question 4

Enzymes are added to a chemical reaction to lower the activation energy. What is an enzyme classified as?

Revolt · Accepted Answer

a catalyst

Question 5

Two substances did not react with each other as expected. What is the most likely reason?

Revolt · Accepted Answer

It was frozen.

Question 6

Three students are working with different substances to measure the chemical changes that occur. Chao is working with milk, Mia is working with carbon dioxide gas, and Ezra is working with rock. Which would best describe the way to treat each substance to get a faster reaction?

Revolt · Accepted Answer

Chao should change the temperature, Mia should adjust the pressure, and Ezra should increase the surface area.

Question 7

If a catalyst lowers the activation energy, what raises the activation energy?

Revolt · Accepted Answer

an inhibitor

Question 8

To break a chemical bond, particles need to collide with a certain amount of

Revolt · Accepted Answer

energy.

Question 9

There are a few ways to increase the rate of a reaction. What is altered when the amount of a substance in a given volume is increased?

Revolt · Accepted Answer

concentration

Question 10

The numbers represent the change in energy triangle cap h for a chemical reaction. Which number would result from an endothermic reaction?

Revolt · Accepted Answer

800

Rate of Chemical Reactions — Quiz Answers

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