Разрыв и образование связей в химических реакциях

Why bond breaking is endothermic and bond making is exothermic, and how the overall energy change of a reaction depends on the two. For O-Level and IGCSE Chemistry. Topics: bond breaking, bond making, energy changes, endothermic, exothermic, bond energy. #OLevelChemistry #IGCSEChemistry #EnergyChanges