(a)[2]
Explain, using sketches, why side-chains lead to a density difference in poly(ethene).
(b)[2]
By referring to the type of bonding between the poly(ethene) chains, explain why LDPE melts at a lower temperature than HDPE.
(c)[2]
Polymerisation can happen by two distinct methods, depending on the monomers involved. These methods are addition and condensation. Give two differences between the methods.
(d(i))
Suggest the way in which this polymer conducts electricity.
(d(ii))
Suggest the molecular geometry needed for this molecule to conduct. Explain your answer.
(d(iii))
What is the empirical formula for this polymer?