Activation Energy
Activation Energy

Activation Energy

This lesson will explain how activation energy is needed to start a chemical reaction.
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Activation energy is the amount of energy required for a reaction to begin.  Some reactions require more activation energy than others. A catalyst is something that can be added to a reaction to decrease the amount of activation energy necessary. A catalyst lowers the amount of activation energy necessary for the reaction to begin and therefore changes the bonds of the reactants making it easier for them to break apart.  An enzyme is an example of a catalyst in your body.