DP Chemistry (last assessment 2024)
Question 19M.3.hl.TZ2.7
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.3.hl.TZ2.7 |
| Level | hl | Paper | 3 | Time zone | TZ2 |
| Command term | Outline, State | Question number | 7 | Adapted from | N/A |
7.
[Maximum mark: 2]
19M.3.hl.TZ2.7
Superconductivity has many applications.
(a)
State what is meant by a superconductor.
[1]
Markscheme
«material with» no electrical resistance [✔]
Examiners report
The question about superconductor was well answered by the candidates.
(b)
Outline the difference in behaviour of Type 1 and Type 2 superconductors when the temperature is lowered.
[1]
Markscheme
Type 1 has sharper transition to superconductivity [✔]
Note: Accept annotated plot of electrical resistance against temperature.
Examiners report
Some candidates struggled to outline the difference in the behaviour of Type 1 and Type 2 superconductors when the temperature is lowered.