What is another word for activation energies?
Pronunciation: [ˌaktɪvˈe͡ɪʃən ˈɛnəd͡ʒɪz] (IPA) 
Activation energies refer to the minimum amount of energy required to initiate a chemical reaction. Synonyms for activation energies include reaction threshold, energy barrier, and reaction activation energy. Reaction threshold refers to the minimum energy required for a chemical reaction to start, while energy barrier alludes to the energy hurdle that a reaction must overcome to proceed. Reaction activation energy, on the other hand, refers specifically to the energy required for the reactants to become activated and to transition into the product state. While these terms are not always used interchangeably, they all refer to the energy necessary to start a chemical reaction.
