The reaction between chlorine and methane is a substitution reaction, where a chlorine atom replaces a hydrogen atom on the methane molecule. This reaction can happen multiple times, leading to a series of products:

1. Monochloromethane (CH₃Cl)

This is the product of the first substitution reaction.

Semi-structural formula: CH₃Cl

2. Dichloromethane (CH₂Cl₂)

This is formed when a second chlorine atom replaces a hydrogen atom.

Semi-structural formula: CH₂Cl₂

3. Trichloromethane (CHCl₃)

This is formed when a third chlorine atom replaces a hydrogen atom.

Semi-structural formula: CHCl₃

4. Tetrachloromethane (CCl₄)

This is formed when all four hydrogen atoms are replaced by chlorine atoms.

Semi-structural formula: CCl₄

Note: The reaction can continue to form higher chlorinated products, but these are less common.