Endothermic and Exothermic 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.

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.

Front

What happens to temperature in an endothermic reaction?

Back

The temperature decreases as heat is absorbed.

Front

What happens to temperature in an exothermic reaction?

Back

The temperature increases as heat is released.

Front

Give an example of an endothermic reaction.

Back

Photosynthesis is an example of an endothermic reaction, where plants absorb sunlight to convert carbon dioxide and water into glucose.

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

What is the role of heat in an endothermic reaction?

Back

Heat is taken in from the surroundings.

Front

What is the role of heat in an exothermic reaction?

Back

Heat is given out to the surroundings.

Front

How can you identify an exothermic reaction?

Back

An exothermic reaction can be identified by a rise in temperature during the reaction.

Front

How can you identify an endothermic reaction?

Back

An endothermic reaction can be identified by a drop in temperature during the reaction.