5) Polymers

• Polymers consist of very large molecules.
• Plastics are synthetic (man-made) polymers.
• The atoms within the polymer molecules are held together by strong covalent bonds.
• The intermolecular forces between the large polymer molecules are also quite strong.
• This means that polymers are solid at room temperature.
• Poly(ethene), commonly known as polythene, is produced when lots of ethene molecules are joined together in an addition polymerisation reaction