DP Physics (first assessment 2025)
Question 19N.2.HL.TZ0.b(ii)
Date | November 2019 | Marks available | [Maximum mark: 2] | Reference code | 19N.2.HL.TZ0.b(ii) |
Level | HL | Paper | 2 | Time zone | TZ0 |
Command term | Explain | Question number | b(ii) | Adapted from | N/A |
b(ii).
[Maximum mark: 2]
19N.2.HL.TZ0.b(ii)
explain why the entropy of the gas decreases.
[2]
Markscheme
ALTERNATIVE 1
«from b(i)» is negative ✔
AND is negative ✔
ALTERNATIVE 2
T and/or V decreases ✔
less disorder/more order «so S decreases» ✔
ALTERNATIVE 3
T decreases ✔
✔
NOTE: Answer given, look for a valid reason that S decreases.
