Endothermic and Exothermic

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

Example of an endothermic process.

Back

Melting ice cubes in a drink is an example of an endothermic process.

Front

Example of an exothermic process.

Back

Burning gasoline in a school bus is an example of an exothermic process.

Front

What happens to temperature in an endothermic reaction?

Back

The temperature of the surroundings decreases as heat is absorbed.

Front

What happens to temperature in an exothermic reaction?

Back

The temperature of the surroundings increases as heat is released.

Front

What is the role of heat in an endothermic reaction?

Back

Heat is absorbed from the surroundings to break bonds in the reactants.

Front

What is the role of heat in an exothermic reaction?

Back

Heat is released to the surroundings when new bonds are formed in the products.

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.