The two main products of the reaction between methane (CH₄) and chlorine (Cl₂) are chloromethane (CH₃Cl) and hydrogen chloride (HCl). This reaction is a substitution reaction where a chlorine atom replaces a hydrogen atom in the methane molecule.

Here is the balanced chemical equation for the reaction:

CH₄ + Cl₂ → CH₃Cl + HCl

The reaction can continue further, replacing additional hydrogen atoms with chlorine atoms to produce dichloromethane (CH₂Cl₂), chloroform (CHCl₃), and finally carbon tetrachloride (CCl₄).