Question 20N.3.sl.TZ0.e
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.3.sl.TZ0.e |
| Level | sl | Paper | 3 | Time zone | TZ0 |
| Command term | Outline | Question number | e | Adapted from | N/A |
of the mass of a rock weighing is uranium(IV) oxide, . of the uranium atoms in the rock are uranium-238, .
Thorium-234 has a higher binding energy per nucleon than uranium-238. Outline what is meant by the binding energy of a nucleus.
[1]
energy required to separate a nucleus into protons and neutrons/nucleons
OR
energy released when nucleus was formed from «individual/free/isolated» protons and neutrons/nucleons ✔
Do not accept “energy released when atom was formed”.
Many students appeared to have portion of the answer but not the entire concept. They seemed to have studied previous MS by heart and entered an answer that was mostly correct but didn't address the question. It is important that student understand the material and not try to memorize their way through the topics.
