Addition polymersAQA A-Level Chemistry: Mind map

Exam questions on Addition polymers

1. Poly(chloroethene), PVC, is made by addition polymerisation of chloroethene, CH₂=CHCl. Rigid PVC is used for window frames and drainpipes, whereas a flexible form is used to insulate electrical cables.
   Write an equation for the formation of poly(chloroethene) from chloroethene, showing the repeating unit.2 marks
2. Poly(propene) is used to make ropes, crates and food containers. A section of its chain has the structure –CH₂–CH(CH₃)–CH₂–CH(CH₃)–CH₂–CH(CH₃)–.
   Name the type of intermolecular force between poly(propene) chains and explain why the polymer is solid at room temperature.2 marks
3. Poly(ethene) is used to make carrier bags and plastic film. It is made from ethene by addition polymerisation, and large quantities are produced each year.
   Explain how poly(ethene) is formed from ethene. State the repeating unit of poly(ethene) and give the IUPAC name of the polymer made from but-1-ene, CH₂=CHCH₂CH₃.3 marks