A molecular model contains one alkene molecule in which one carbon atom is represented by a green piece. The marked molecule is joined to neighbouring alkene molecules to model addition polymerisation.
How does forming the polymer affect the green piece?
It is transferred to a repeating unit formed from a neighbouring molecule
It is released from the chain as part of a separate small molecule
It is copied into the repeating units on either side of the marked molecule
It remains in the repeating unit formed from the marked molecule
94 exam-style questions on AQA GCSE Chemistry 7.3 Synthetic and naturally occurring polymers, covering 7.3.1 Addition polymerisation, 7.3.2 Condensation polymerisation, 7.3.3 Amino acids, and 7.3.4 DNA (deoxyribonucleic acid) and other naturally occurring polymers. Each one has a worked solution and a mark scheme showing where the marks go.