Endothermic & Exothermic Reactions

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

Give an example of an endothermic reaction.

Back

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

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

What happens to temperature during an endothermic reaction?

Back

The temperature of the surroundings decreases during an endothermic reaction.

Front

What happens to temperature during an exothermic reaction?

Back

The temperature of the surroundings increases during an exothermic reaction.

Front

What is the role of energy in chemical reactions?

Back

Energy is either absorbed or released during chemical reactions, determining whether they are endothermic or exothermic.

Front

How can you identify an endothermic reaction?

Back

An endothermic reaction can be identified by a temperature drop in the surroundings or by observing that heat is absorbed.

Front

How can you identify an exothermic reaction?

Back

An exothermic reaction can be identified by a temperature rise in the surroundings or by observing that heat is released.

Front

What is the law of conservation of energy in relation to chemical reactions?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another during chemical reactions.