Exothermic and Endothermic Reactions

Front

What is an exothermic reaction?

Back

A chemical reaction that releases energy in the form of heat.

Front

What is an endothermic reaction?

Back

A chemical reaction that absorbs energy from its surroundings.

Front

What happens to temperature during an exothermic reaction?

Back

The temperature increases.

Front

What happens to temperature during an endothermic reaction?

Back

The temperature decreases.

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels, such as burning wood or gasoline.

Front

Give an example of an endothermic reaction.

Back

Photosynthesis in plants.

Front

What is the role of energy in exothermic reactions?

Back

Energy is released to the surroundings.

Front

What is the role of energy in endothermic reactions?

Back

Energy is absorbed from the surroundings.

Front

How do hand warmers work?

Back

They use exothermic reactions to produce heat.

Front

What is a common characteristic of endothermic reactions?

Back

They often feel cold to the touch.