What you’ll learn4 learning objectivesChoose one objective for a focused lesson, or study the complete topic.20.1.1Addition polymerisation• Describe addition polymerisation as exemplified by poly(ethene) and poly(chloroethene), PVCSyllabus objective20.1.2Repeat units of addition polymers• Deduce the repeat unit of an addition polymer obtained from a given monomerSyllabus objective20.1.3Monomer(s) present• Identify the monomer(s) present in a given section of an addition polymer moleculeSyllabus objective20.1.4The difficulty of the disposal• Recognise the difficulty of the disposal of poly(alkene)s, i.e. non-biodegradability and harmful combustion productsSyllabus objective