Endothermic and Exothermic Reactions

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, causing the temperature of the surroundings to decrease.

Tags

NGSS.HS-PS1-4

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings, causing the temperature of the surroundings to increase.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Front

How do endothermic reactions feel to the touch?

Back

Endothermic reactions feel cold to the touch because they absorb heat.

Tags

NGSS.MS-PS1-4

Front

How do exothermic reactions feel to the touch?

Back

Exothermic reactions feel hot to the touch because they release heat.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Front

Give an example of an endothermic reaction.

Back

Cooking bacon is an example of an endothermic reaction as it absorbs heat and changes color and smell.

Tags

NGSS.HS-PS1-4

Front

True or false: Exothermic reactions absorb energy.

Back

False. Exothermic reactions release energy.

Tags

NGSS.HS-PS1-4

Front

True or false: Exothermic reactions release energy.

Back

True. Exothermic reactions release energy.

Tags

NGSS.HS-PS1-4

Front

What happens to energy in an endothermic reaction?

Back

In an endothermic reaction, energy is absorbed from the surroundings.

Tags

NGSS.HS-PS1-4

Front

What happens to energy in an exothermic reaction?

Back

In an exothermic reaction, energy is released into the surroundings.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Front

What is the main difference between endothermic and exothermic reactions?

Back

The main difference is that endothermic reactions absorb heat while exothermic reactions release heat.

Tags

NGSS.HS-PS1-4