Exothermic and Endothermic Reactions

Front

What is an exothermic reaction?

Back

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

Front

What is an endothermic reaction?

Back

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

Front

Give an example of an endothermic process.

Back

Baking bread and cooking an egg are examples of endothermic processes.

Front

What happens to temperature in an exothermic reaction?

Back

The temperature increases because heat is released.

Front

What happens to temperature in an endothermic reaction?

Back

The temperature decreases because heat is absorbed.

Front

Is photosynthesis an exothermic or endothermic reaction?

Back

Photosynthesis is an endothermic reaction.

Front

What type of chemical is needed to increase temperature in a reaction?

Back

Calcium chloride is an example of a chemical that can be used in an exothermic reaction to increase temperature.

Front

What is the role of heat in an exothermic reaction?

Back

In an exothermic reaction, heat is given out or released.

Front

What is the role of heat in an endothermic reaction?

Back

In an endothermic reaction, heat is taken in or absorbed.

Front

What is a common characteristic of exothermic reactions?

Back

Exothermic reactions often feel warm or hot to the touch.