Endothermic and Exothermic Reactions

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 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 happens to temperature during an exothermic reaction?

Back

The temperature increases.

Front

What happens to temperature during an endothermic reaction?

Back

The temperature decreases.

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels, such as burning wood or gasoline.

Front

Give an example of an endothermic reaction.

Back

Dissolving ammonium nitrate in water.

Front

What is the role of heat in exothermic reactions?

Back

Heat is released as a product of the reaction.

Front

What is the role of heat in endothermic reactions?

Back

Heat is absorbed as a reactant in the reaction.

Front

How do endothermic reactions feel to the touch?

Back

They feel cold because they absorb heat from the surroundings.

Front

How do exothermic reactions feel to the touch?

Back

They feel warm or hot because they release heat to the surroundings.