~ Describe the pollution problems caused by the disposal of non-biodegradable plastics.
~ Describe two methods of recycling plastics.
~ Describe depolymerisation as a process in which polymers are broken down into their monomers, exemplified by hydrolysis of polyesters using acid as a catalyst.
~ Draw 2 repeat units of the addition polymer, poly(propene).
~ Draw the repeat unit of nylon.
~ Draw the repeat unit of Terylene.
~ Describe four differences between addition polymerisation and condensation polymerisation.