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 can you identify an exothermic reaction?

Back

An exothermic reaction can be identified by a rise in temperature of the surroundings or the release of heat.

Front

How can you identify an endothermic reaction?

Back

An endothermic reaction can be identified by a drop in temperature of the surroundings or the absorption of heat.

Front

What happens to temperature in an exothermic reaction?

Back

In an exothermic reaction, the temperature increases.

Front

What happens to temperature in an endothermic reaction?

Back

In an endothermic reaction, the temperature decreases.

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

Give an example of an endothermic reaction.

Back

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

Front

What is the role of energy in chemical reactions?

Back

Energy is either absorbed or released during chemical reactions, determining whether the reaction is exothermic or endothermic.

Front

What is the equation for photosynthesis?

Back

The equation for photosynthesis is @@6 ext{CO}_2 + 6 ext{H}_2 ext{O} + ext{Energy} ightarrow ext{C}_6 ext{H}_{12} ext{O}_6 + 6 ext{O}_2@@.