Step 1: Understand what haloalkanes are. They are organic compounds that contain carbon and halogen atoms.
Step 2: Identify what a functional group is. A functional group is a specific group of atoms within a molecule that is responsible for the characteristic chemical reactions of that molecule.
Step 3: Recognize that in haloalkanes, the halogen atoms (like fluorine, chlorine, bromine, or iodine) are the functional groups.
Step 4: Conclude that the presence of halogen atoms in haloalkanes is what defines their reactivity and properties.
