Most polymers are made from, raw materials from crude oil, Polymers are formed by, joining lots of small molecules together, Polymers are often elastic which means, they return to their original shape after stretching, Poly(ethene) is useful for shopping bags, because it is strong and flexible, The polymer structure is made up of long-chain molecules, with repeating groups of atoms, Rubber is an example of, a natural polymer, The long ‘bendy’ molecules, mean that most of them are flexible, Some examples of synthetic polymers are, poly(vinylchloride) and poly(propene), The small molecules used to make polymers, are called monomers, Poly(vinylchloride) is used for electrical cables, because it is flexible and an insulator, This diagram shows polymer chains that will melt when heated., , This diagram shows polymers with cross-links between chains, .

Polymers

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