Endothermic vs. Exothermic Reactions

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat or light. Example: Burning wood.

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. Example: Photosynthesis.

Front

Give an example of an exothermic reaction in everyday life.

Back

Lighting a match is an example of an exothermic reaction.

Front

Give an example of an endothermic reaction in everyday life.

Back

Cooking eggs in a skillet is an example of an endothermic reaction.

Front

What happens to energy during an exothermic reaction?

Back

Energy is released into the surroundings.

Front

What happens to energy during an endothermic reaction?

Back

Energy is absorbed from the surroundings.

Front

How can you identify an exothermic reaction?

Back

Exothermic reactions often feel warm or hot to the touch due to the release of heat.

Front

How can you identify an endothermic reaction?

Back

Endothermic reactions often feel cool to the touch because they absorb heat.

Front

What is the role of energy in chemical reactions?

Back

Energy is involved in breaking and forming bonds during chemical reactions.

Front

What is an example of an exothermic reaction involving rust?

Back

The formation of rust on nails is an exothermic reaction as energy is released.