A reaction is exothermic when
A) weak bonds break and strong bonds form.
B) strong bonds break and weak bonds form.
C) weak bonds break and weak bonds form.
D) strong bonds break and strong bonds form.

Question

Quizplus · Accepted Answer

Exothermic reactions release energy, which means that the products have lower energy than the reactants. This occurs when weak bonds break and strong bonds form, as the energy released from the formation of the strong bonds is greater than the energy required to break the weak bonds. Therefore, choice A is the best option.

A Reaction Is Exothermic When