(a)[2]
Using sketches, Explain why side-chains cause a difference in density in poly(ethene).
(b)[2]
Using the type of bonding between the poly(ethene) chains, explain why LDPE has a lower melting point than HDPE.
(c)[2]
Polymerisation may occur by two different methods, depending on the monomers used. These methods are addition and condensation. Give two differences between them.
(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))
State the empirical formula of this polymer.