DP Chemistry (last assessment 2024)
Question 20N.3.sl.TZ0.b(i)
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.3.sl.TZ0.b(i) |
| Level | sl | Paper | 3 | Time zone | TZ0 |
| Command term | Suggest | Question number | b(i) | Adapted from | N/A |
b(i).
[Maximum mark: 1]
20N.3.sl.TZ0.b(i)
Carbon fibre reinforced plastic (CFRP) is a useful composite. Epoxy is a thermoset polymer that is used as a binding polymer when making CFRP.
Thermoplastic composites are increasingly replacing thermosets.
Suggest one advantage of thermoplastic polymers over thermosets.
[1]
Markscheme
can be recycled
OR
can be reformed when hot
OR
high impact/chemical/abrasion resistance ✔
Examiners report
Approximately 1% of the candidates this session attempted this option so feedback on this section by question is not possible due to the minimal number of scripts available for marking. The students that did attempt this option did not perform very well with several of them leaving some questions unanswered.
