This document discusses different types of polymers and how their names relate to their structures. Addition polymers like polyethylene and polytetrafluoroethylene are formed from monomers joining together by double bonds breaking and forming new single bonds between monomers. Polyethylene is made from ethylene monomers in a chain structure used for plastic bags and wrap. Polytetrafluoroethylene is made from tetrafluoroethylene monomers in a chain structure used for non-stick surfaces.