BIOMOLECULES AND ENZYMES

Detailed explanation-1: -chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Detailed explanation-2: -In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Detailed explanation-3: -The substances that undergo chemical changes are called reactants.

Detailed explanation-4: -Reactants → Products. Bonds break and reform during chemical reactions. Reactants and products contain the same atoms, but they are rearranged during the reaction, so reactants and products are different substances.