Explain the whole chemical energetics concept form 3

Chemical energetics is the study of the energy changes that occur during chemical reactions. Reactions that release heat energy to the surroundings are called exothermic reactions, often causing a temperature increase. Conversely, reactions that absorb heat energy from the surroundings are endothermic reactions, leading to a temperature decrease. These energy changes happen because energy is required to break chemical bonds in reactants, and energy is released when new bonds form in products.