Chemical reaction

A chemical reaction is a process where substances, called reactants, transform into new substances, known as products. This transformation involves breaking and forming chemical bonds, resulting in changes in properties, energy, and composition. Common examples include rust forming on iron, food cooking, or baking a cake. In a chemical reaction, elements and compounds rearrange, but the total number of atoms remains the same. These reactions are essential in nature and everyday life, driving processes in everything from digestion to the combustion of fuels.