👉 In chemistry, a polymeric substance is one that can be made from multiple monomers (single unit) by polymerization. It's typically composed of more than one monomer. A unpolymerised substance would not have any single monomer present in it and would consist of multiple monomers. For example, a polymer like polystyrene or polyethylene glycol can be made from many different monomers such as ethylene (COOH) and propene (C6H