The term for the chemical transformation of substances is known as a chemical reaction. In a chemical reaction, reactants undergo rearrangement of atoms to form products, resulting in a change in chemical composition. These reactions can involve the breaking or forming of chemical bonds, resulting in the release or absorption of energy. Chemical reactions are fundamental processes in both nature and industry, facilitating everything from metabolic pathways in living organisms to the production of materials in manufacturing, highlighting their essential role in various scientific disciplines.