A manufacturer uses a mixture of two waste polymers to make trays. The trays need to be rigid throughout.
The mixture is heated to 180 °C before being shaped.
| Polymer | Melting temperature in °C | Property when solid |
|---|---|---|
| P | 150 | rigid |
| Q | 230 | flexible |
Explain why the mixture is unlikely to produce high-quality trays.
Suggest one change to the recycling process that would ensure the trays are rigid throughout.
99 exam-style questions on AQA GCSE Chemistry 10.2 Life cycle assessment and recycling, covering 10.2.1 Life cycle assessment and 10.2.2 Ways of reducing the use of resources. Each one has a worked solution and a mark scheme showing where the marks go.