Answer: Reactants → Products
Explanation: A chemical equation is a symbolic representation of a chemical reaction, showing the reactants on the left-hand side, separated by an arrow, and the products on the right-hand side. For example, the equation for the combustion of methane (CH4) would be written as:
CH4 + 2O2 → CO2 + 2H2O
Where CH4 and O2 are the reactants and CO2 + 2H2O are the products.