DP Chemistry (first assessment 2025)
Question 23M.2.HL.TZ1.20a
Date | May 2023 | Marks available | [Maximum mark: 2] | Reference code | 23M.2.HL.TZ1.20a |
Level | HL | Paper | 2 | Time zone | TZ1 |
Command term | Describe | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
23M.2.HL.TZ1.20a
(a)
Describe which cancers are treated by TAT and BNCT and the particles used in each treatment.
TAT:
BNCT:
[2]
Markscheme
TAT:
spread to multiple sites AND alpha particles
OR
«cancers of the» blood/leukaemia AND alpha particles ✓
BNCT:
head/neck/brain «cancers» AND neutrons ✓
Award [1] for 2 correct cancers or 2 correct particles.