Question

Thermal reaction and photochemical reaction difference

Answer 1

A photochemical reaction is a form of chemical reaction in which the reactants get energy as photons while a thermal reaction is a form of chemical reaction in which the reactants get energy as heat. This is the key difference between photochemical and thermal reaction. Both these are very important chemical reactions in chemistry. These two reactions differ from each other according to the energy source. Moreover, photochemical reactions directly affected by light while thermal reactions are not. However, the temperature has a direct effect on thermal reactions while there is no necessity of temperature for photochemical reactions.