Endothermic vs. Exothermic Reactions

Endothermic

VS

Exothermic
Reactions

An endothermic reaction

____________ energy to

__________ bonds. The

energy is absorbed in

the form of _________

from the surroundings.

absorbs

Bond Breaking

(absorbs energy)

break

heat

Multiple Choice

What is required for an endothermic reaction?

• Release of energy

• Absorption of energy

• Constant energy

Require energy to react because reactants have less energy than the products

​

Endothermic Reactions

Multiple Choice

In an endothermic reaction, the reactants have ______ energy than the products.

• more

• less

• the same

Multiple Choice

In an endothermic reaction, heat moves from the ______ to the ______.

• surroundings, system

• system, surroundings

As a result, the

temperature of the

surroundings goes

down

Surroundings

Get Cooler

Multiple Choice

What happens to temperature in an endothermic reaction?

• Temperature increases

• Temperature decreases

• Temperature is not affected

An exothermic reaction

____________ energy

when new bonds

_________. The energy is

released in the form of

_________ to the

surroundings.

releases

Bond Making

(releases energy)

form

heat

Multiple Choice

What is required for an exothermic reaction?

• Absorption of energy

• Release of energy

• No energy change

Release energy to react because reactants have more energy than the products

Exothermic Reaction

Multiple Choice

In an exothermic reaction, the reactants have ______ energy than the products.

• more

• less

• the same

Multiple Choice

During an exothermic reaction, heat moves from the ______ to the ______.

• surroundings, system

• system, surroundings

• system, system

Multiple Choice

Which reaction releases light, heat, or sound?

• Endothermic

• Exothermic

As a result, the

temperature of the

surroundings goes

_________.

up

Surroundings
Get Warmer

Multiple Choice

What happens to temperature in an exothermic reaction?

• Temperature increases

• Temperature decreases

• Temperature remains constant