CAIE A Level Chemistry 9701 · Polymerisation
Compare the formation of a polyester from butane-1,4-diol and hexanedioic acid with the formation of a polyamide from butane-1,4-diamine and hexanedioic acid. In your answer, include: the monomers used, the type of polymerisation, the small molecule eliminated, the linkage formed in each polymer, and the repeat unit of each polymer.
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.