A reaction is exothermic when Group of answer choices weak bonds break and strong bonds form. strong bonds break and weak bonds form. strong bonds break and strong bonds form. weak bonds break and weak bonds form.

weak bonds break and strong bonds form

Explanation:

An exothermic reaction is a chemical reaction in which heat energy is evolved during the reaction process.

Bond formation requires energy while bond breakage releases energy. More energy is needed for the formation of weak bonds as compared to strong bonds.

Hence, when weak bonds break, they release more energy than needed to make a corresponding strong bond leading to the release of the remaining energy as heat.