Exothermic and Endothermic Reactions

Front

What is an exothermic reaction?

Back

A chemical reaction that releases energy, usually in the form of heat, to the surroundings.

Front

What is an endothermic reaction?

Back

A chemical reaction that absorbs energy from the surroundings, usually resulting in a temperature decrease.

Front

How do endothermic reactions feel to the touch?

Back

They feel cold because they absorb heat from the surroundings.

Front

What is the main characteristic of an endothermic reaction?

Back

It requires an input of energy to proceed.

Front

What type of energy is typically released in an exothermic reaction?

Back

Heat.

Front

What is the difference between exothermic and endothermic reactions?

Back

Exothermic reactions release energy, while endothermic reactions absorb energy.

Front

Can you give an example of an exothermic reaction?

Back

Combustion of fuels, such as burning wood or gasoline.

Front

Can you give an example of an endothermic reaction?

Back

Photosynthesis, where plants absorb sunlight to convert carbon dioxide and water into glucose.

Front

What happens to the temperature of the surroundings during an exothermic reaction?

Back

The temperature of the surroundings increases.

Front

What happens to the temperature of the surroundings during an endothermic reaction?

Back

The temperature of the surroundings decreases.