Final answer:
Polytetrafluoroethylene (PTFE), also known as Teflon, is composed of the monomer tetrafluoroethylene.
Step-by-step explanation:
Polytetrafluoroethylene (PTFE), also known as Teflon, is composed of the monomer tetrafluoroethylene. It is a synthetic fluoropolymer that is highly inert to chemicals and solvents. PTFE is used in a variety of applications, including non-stick coatings, electrical insulation, and lubricants. Unlike polyethylene, polystyrene, and polypropylene, PTFE is specifically composed of tetrafluoroethylene monomers.