DP Chemistry (last assessment 2024)
Question 19M.3.sl.TZ1.d(ii)
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.sl.TZ1.d(ii) |
| Level | sl | Paper | 3 | Time zone | TZ1 |
| Command term | Compare | Question number | d(ii) | Adapted from | N/A |
d(ii).
[Maximum mark: 1]
19M.3.sl.TZ1.d(ii)
Natural gas is an energy source composed mainly of methane.
Compare methane’s atmospheric abundance and greenhouse effect to that of carbon dioxide.
[1]
Markscheme
methane is less abundant AND has a greater effect «per mol» [✔]
Examiners report
Quite a few candidates were aware of the relative atmospheric abundances of carbon dioxide and methane as well as their relative potency for enhancing the greenhouse effect.
