Polymers

Polymers

Some plastics have weak forces. They are individual tangled chains held together by weak intermolecular forces. Thermosoftening polymers don't have cross linking between chains. This makes it very easy to melt them, once it cools it hardens in a new shape. You can melt and remould these plastics as many times as you like.

Some plastics have stronger intermolecular forces between the…