key term - Endothermic reaction

Definition

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings. In other words, it requires an input of energy to occur.

Related terms

Exothermic reaction: A chemical reaction that releases heat into its surroundings.

Activation energy: The minimum amount of energy required for a chemical reaction to occur.

Thermodynamics:

The study of how energy is transferred and transformed in physical systems, including chemical reactions.