Endothermic and Exothermic Reactions

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat to its surroundings.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings, usually in the form of heat.

Front

What happens to energy in an exothermic reaction?

Back

In an exothermic reaction, energy is given out to the surroundings.

Front

What happens to energy in an endothermic reaction?

Back

In an endothermic reaction, energy is taken in from the surroundings.

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.

Front

Give an example of an endothermic reaction.

Back

Photosynthesis in plants is an example of an endothermic reaction.

Front

What is the role of heat in an exothermic reaction?

Back

Heat is released during an exothermic reaction, increasing the temperature of the surroundings.

Front

What is the role of heat in an endothermic reaction?

Back

Heat is absorbed during an endothermic reaction, decreasing the temperature of the surroundings.

Front

Is freezing juice an exothermic or endothermic process?

Back

Freezing juice is an exothermic process because it releases heat to the surroundings.

Front

Is baking bread an exothermic or endothermic process?

Back

Baking bread is an endothermic process because it absorbs heat from the oven.