CAIE A Level Chemistry 9701 · Polymerisation

Polymerisation: describe question

Describe5 marksChallenge

A section of a polymer chain is shown below.

−CHX2−CHX2−CHX2−CHX2−CHX2−CHX2X−\ce{-CH2-CH2-CH2-CH2-CH2-CH2-}

Describe how this section shows that the polymer was formed by addition polymerisation, and state the monomer from which it is made.

0 words · 5 marks

No account needed for your first marks. Your answer is used only to mark it.

How this question is marked

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.

Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.

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