What are the reactants in a chemical formula

Answer 1

In a chemical formula, the reactants are the substances that are combined or broken down to form new substances during a chemical reaction. They are usually shown on the left side of the chemical equation. Reactants are consumed or used up in the reaction. For example, in the chemical formula for the combustion of methane (CH4 + 2O2 → CO2 + 2H2O), CH4 and O2 are the reactants.