Exothermic and Endothermic Reactions

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings.

Tags

NGSS.HS-PS1-4

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.

Tags

NGSS.HS-PS1-4

Front

What happens to the temperature of the surroundings during an exothermic reaction?

Back

The temperature of the surroundings increases during an exothermic reaction.

Tags

NGSS.HS-PS3-4

Front

What happens to the temperature of the surroundings during an endothermic reaction?

Back

The temperature of the surroundings decreases during an endothermic reaction.

Tags

NGSS.HS-PS1-4

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels, such as burning wood or gasoline, is an example of an exothermic reaction.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Front

Give an example of an endothermic reaction.

Back

Photosynthesis in plants is an example of an endothermic reaction.

Tags

NGSS.HS-LS1-5

Front

What is the role of energy in chemical reactions?

Back

Energy is either absorbed or released during chemical reactions, influencing the reaction's temperature and spontaneity.

Tags

NGSS.HS-PS1-4

Front

How can you identify an exothermic reaction in a laboratory setting?

Back

An exothermic reaction can be identified by a noticeable increase in temperature or the release of heat.

Tags

NGSS.HS-PS1-5

Front

How can you identify an endothermic reaction in a laboratory setting?

Back

An endothermic reaction can be identified by a noticeable decrease in temperature or the absorption of heat.

Front

What type of reaction occurs in a hand warmer?

Back

A hand warmer typically involves an exothermic reaction.

Tags

NGSS.HS-PS3-4