Endothermic and Exothermic Reactions

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings, usually in the form of heat.

Front

What is an exothermic reaction?

Back

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

Front

How can you identify an endothermic reaction?

Back

An endothermic reaction can be identified by a decrease in temperature of the surroundings or the absorption of heat.

Front

How can you identify an exothermic reaction?

Back

An exothermic reaction can be identified by an increase in temperature of the surroundings or the release of heat.

Front

What happens to energy during an endothermic reaction?

Back

Energy is absorbed during an endothermic reaction.

Front

What happens to energy during an exothermic reaction?

Back

Energy is released during an exothermic reaction.

Front

What is the general equation for an endothermic reaction?

Back

Reactants + Energy → Products.

Front

What is the general equation for an exothermic reaction?

Back

Reactants → Products + Energy.

Front

What is the role of energy in breaking chemical bonds?

Back

Energy is absorbed to break chemical bonds between atoms.

Front

Can energy be created during a chemical reaction?

Back

False. Energy cannot be created; it can only be transformed or transferred.