Exothermic and Endothermic Reactions

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat, causing the temperature of the surroundings to increase.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings, resulting in a decrease in temperature.

Front

How does temperature change in an exothermic reaction?

Back

In an exothermic reaction, the temperature of the surroundings increases.

Front

How does temperature change in an endothermic reaction?

Back

In an endothermic reaction, the temperature of the surroundings decreases.

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 an example of an endothermic reaction?

Back

Photosynthesis in plants is an example of an endothermic reaction, as it absorbs sunlight to convert carbon dioxide and water into glucose.

Front

What happens to the surroundings during an exothermic reaction?

Back

The surroundings feel warmer as heat is released into them.

Front

What happens to the surroundings during an endothermic reaction?

Back

The surroundings feel cooler as heat is absorbed from them.

Front

What type of reaction occurs in hand warmers?

Back

Hand warmers typically involve exothermic reactions that release heat.

Front

In a chemical reaction, if the temperature rises, what type of reaction is it likely to be?

Back

It is likely to be an exothermic reaction.