CAIE A Level Chemistry 9701 · Polymerisation
A student investigates two polymers, X and Y. Polymer X is produced from ethene, , under high pressure. Polymer Y is formed from the reaction between hexanedioic acid, , and hexane-1,6-diamine, . Compare the polymerisation reactions that produce X and Y.
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.