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If energy is stored in chemical bonds, and bond formation is always an exothermic process, doesn't that imply that bond formation both stores and releases energy? How is this possible? I'm clearly not understanding some basic tenet of chemistry. For example, H+ and OH- neutralize to form H2O.
1 If two substances react and the temperature of the mixture increases, the reaction is exothermic. 2  A chemical reaction involves the breaking of bonds in the reactants and the forming of bonds in the products. 3  It takes energy to break bonds. 4  Energy is released when bonds are formed.t took more energy to break the bonds of the reactants than was released when the bonds in the products were formed. Project the animation Endothermic Reaction. Remind students that a chemical reaction involves the breaking of bonds in the reactants and the making of bonds in the products.