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Activation energy
In chemistry, activation energy EA is the minimum impact energy required for a chemical reaction to take place. [1] In a reaction, the reactant molecules come together and chemical bonds are stretched, broken, and formed in producing the products: Reactants → Products
During this process the energy of the system increases to a maximum, then decreases to the energy of the products. The “activation energy” is the difference between the maximum energy and the energy of the reactants; i.e. it is the energy barrier that has to be overcome for the reaction to proceed. [1]
References
1. Daintith, John. (2004). Oxford Dictionary of Chemistry. New York: Oxford University Press.
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