Exothermic and Endothermic Reactions

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature.

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, resulting in an increase in temperature.

Tags

NGSS.HS-PS3-4

Front

In an endothermic reaction, heat is...

Back

taken in.

Tags

NGSS.HS-PS1-4

Front

In an exothermic reaction, heat is...

Back

given out.

Tags

NGSS.HS-PS3-4

Front

What happens to temperature in an endothermic reaction?

Back

The temperature of the surroundings decreases.

Tags

NGSS.HS-PS1-4

Front

What happens to temperature in an exothermic reaction?

Back

The temperature of the surroundings increases.

Tags

NGSS.HS-PS3-4

Front

What is an example of an exothermic reaction?

Back

Burning of fuels, such as wood or gasoline.

Tags

NGSS.HS-PS1-4

Front

What is an example of an endothermic reaction?

Back

Photosynthesis, where plants absorb sunlight.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Front

What is the general equation for an exothermic reaction?

Back

Reactants → Products + Energy.

Front

What is the general equation for an endothermic reaction?

Back

Reactants + Energy → Products.

Tags

NGSS.HS-PS1-4