Edexcel IGCSE Chemistry 4.45 addition polymer repeat units

Practise repeat-unit questions by converting displayed alkene monomers into bracketed polymer units with n and extension bonds.

Exam points

Convert an alkene monomer into a repeat unit by changing the C=C bond to C-C.
Add brackets, n and extension bonds correctly in polymerisation equations.
Draw repeat units for poly(ethene), poly(propene), poly(chloroethene) or PTFE.

[Maximum number: 2]

The table shows the structures of six organic compounds.

Table for Question 4.45 Addition polymer repeat units question 1 — Edexcel IGCSE Chemistry

Compound E is used to make an addition polymer.

Complete the equation to show part of the polymer formed from two molecules of compound E.

Figure for Question 4.45 Addition polymer repeat units question 1 — Edexcel IGCSE Chemistry

Figure for Answer to Question 4.45 Addition polymer repeat units question 1 — Edexcel IGCSE Chemistry

M1 two carbon atoms both with 2 H atoms

M2 two carbon atoms both with 1 H atom and $1 \mathrm{CH}_{3}$ group and nothing attached to the joining bonds

Marks are independent

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4.45 Addition polymer repeat units question 1