Polymers

Polymers have very large molecules. The atoms in a polymer molecule are joined together by strong covalent bonds in long chains. There are variable numbers of atoms in the chains of a given polymer. One example of a polymer is poly(ethene).

A model of a short section of a poly(ethene) molecule, a simple polymer. Polythene molecules will contain thousands of carbon atoms joined together in a chainA short section of a poly(ethene) molecule. Poly(ethene) molecules contain thousands of carbon atoms joined together in a chainCovalent structure of poly(ethene).This diagram also represents poly(ethene). The value of 'n' varies, but it is always a large number

Properties of polymers

The intermolecular forces between polymer molecules are strong compared to the intermolecular forces between small molecules. This means that polymers melt at higher temperatures than substances with small molecules. They are solids at room temperature.

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