Exothermic and Endothermic Reactions

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy, usually in the form of heat.

Front

What happens to energy in an endothermic reaction?

Back

In an endothermic reaction, energy is absorbed from the surroundings.

Front

What is the effect of an exothermic reaction on temperature?

Back

The temperature increases as heat is released into the surroundings.

Front

What is the effect of an endothermic reaction on temperature?

Back

The temperature decreases as heat is absorbed from the surroundings.

Front

Can you give an example of an endothermic reaction?

Back

Dissolving ammonium nitrate in water is an example of an endothermic reaction.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is the difference between exothermic and endothermic reactions?

Back

Exothermic reactions release energy, while endothermic reactions absorb energy.

Front

What is the role of heat in exothermic reactions?

Back

Heat is released to the surroundings during exothermic reactions.

Front

What is the role of heat in endothermic reactions?

Back

Heat is absorbed from the surroundings during endothermic reactions.

Front

How does the dissolution of sugar in water classify?

Back

The dissolution of sugar in water is classified as a physical change.