Stronger bond= lower energy? why??? "In an exothermic reaction, some of the potential energy stored in the chemical bonds is being converted to thermal energy via kinetic energy(heat) In this exothermic process, the bonds in the products are stronger than those of the reactants." This does not make sense to me at all. If there is less potential energy in the products shouldn't the bonds be weaker. I visualize a strong bond as having a higher potential energy since the bonds are stronger and thus have more energy between the two atoms. Can someone please clarify because what seems logical is not true. I am equally confused on endothermic reactions. The bonds should be stronger as heat energy is flowing into the system. Yet the textbook clearly states :"In an endothermic reaction the bonds of the products will be on average, weaker."