A chemical change, also known as a chemical reaction, is a process in which one or more substances are transformed into new substances with different chemical properties. It involves breaking and forming chemical bonds, leading to the creation of new molecules or compounds. During a chemical change, the composition, structure, and properties of the substances involved are altered, often accompanied by observable changes such as the release or absorption of energy, production of gases, changes in color, formation of precipitates, or changes in odor.
