A technician has two colourless liquid hydrocarbon samples, J and K. A small amount of bromine water is added to each sample and the mixtures are shaken.
| Sample | Observation |
|---|---|
| J | The bromine water remains orange. |
| K | The bromine water changes from orange to colourless. |
The technician wants to use one of the samples to make a polymer.
Explain which sample contains molecules that can act as monomers in addition polymerisation.
Describe how the carbon-carbon bonds in molecules of the chosen sample change as the polymer chain forms.
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.