What are the reactant the bit you start with?

The reactants are the starting substances in a chemical reaction that undergo change to form products. In a typical reaction, these substances are combined, and their bonds are broken and reformed to create new compounds. Identifying reactants is crucial for understanding the reaction's mechanism and predicting the products formed. For example, in the combustion of methane, the reactants are methane (CH₄) and oxygen (O₂).