Plastics (Polymers)

Question 1

Thermosoftening polymers:

Answer 1

individual tangled chains of polymers (no cross links between polymer chains), held together by weak intermolecular forces which allow them to slide over each other. This makes them easy to melt, shape, mould and remould. E.g. bags and bottles.

Question 2

Thermosetting polymers:

Answer 2

strong intermolecular forces between the polymer chains, called crosslinks that hold the chains firmly together. This makes them tough, hard, strong, rigid… They do not soften when heated. E.g. water tanks, drain pipes and PVC windows.