key term - Activation Energy

Definition

Activation Energy is defined as the minimum amount of energy required to initiate or start up a chemical reaction.

Related terms

Catalyst:

A substance that lowers activation energy and speeds up a chemical reaction, but is not consumed in the process.

Exothermic Reaction:

A reaction that releases energy, often in the form of heat. It requires less activation energy.

Endothermic Reaction:

A reaction that absorbs energy from the surroundings. It usually requires more activation energy.