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 exothermic reaction?

Back

The temperature increases as heat is released.

Front

What happens to temperature in an endothermic reaction?

Back

The temperature decreases as heat is absorbed.

Front

What is 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

What is 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 endothermic reactions?

Back

Heat is absorbed from the surroundings, causing the system to gain energy.

Front

What is the role of heat in exothermic reactions?

Back

Heat is released into the surroundings, causing the system to lose energy.

Front

How can you identify an exothermic reaction?

Back

An exothermic reaction can be identified by a temperature increase in the surroundings.

Front

How can you identify an endothermic reaction?

Back

An endothermic reaction can be identified by a temperature decrease in the surroundings.