A chemist tests two hydrocarbon samples.
| Sample | Observation after shaking with bromine water |
|---|---|
| P | The mixture remains orange. |
| Q | The mixture changes from orange to colourless. |
The chemist wants to use one of the samples as a monomer in addition polymerisation.
Explain which sample the chemist should use and how molecules of this sample form a polymer.
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.