👉 In the context of chemistry, a reaction is when two or more substances combine to form new substances. This can happen in various ways such as by splitting chemical bonds, reducing atoms, or forming molecules. The process of reacting involves the release of energy (heat) and/or products that are different from those produced during the reactants. Reactions are usually characterized by a sequence of steps where one or more reactant molecules combine with an enzyme to form a new compound, which then undergoes further reactions
