What happens when reactants form products?

When reactants form products, a chemical reaction occurs where bonds between atoms in the reactants are broken and new bonds are formed to create the products. This process typically involves a rearrangement of atoms and can result in the release or absorption of energy, often in the form of heat or light. The resulting products have different properties than the original reactants, indicating a transformation has taken place. The reaction can be reversible or irreversible, depending on the specific conditions and nature of the reactants and products involved.