DP Chemistry (last assessment 2024)
Question 18M.3.sl.TZ1.9a
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.3.sl.TZ1.9a |
| Level | sl | Paper | 3 | Time zone | TZ1 |
| Command term | Identify | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
18M.3.sl.TZ1.9a
Greenhouse gases absorb infrared radiation.
(a)
Identify one naturally occurring greenhouse gas, other than carbon dioxide or water vapour, and its natural source.
[2]
Markscheme
Accept “nitrous oxide”.
Accept “electrical discharges/lightning”.
[2 marks]