| Date | May 2014 | Marks available | 1 | Reference code | 14M.1.SL.TZ2.23 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 23 | Adapted from | N/A |
Question
What is the definition of the unified atomic mass unit?
A. The mass of one atom of hydrogen.
B. \(\frac{1}{{12}}\) of the mass of an atom of carbon-12.
C. The mass of one atom of carbon-12.
D. \(\frac{1}{{16}}\) of the mass of an atom of oxygen-16.
Markscheme
B
Examiners report
[N/A]
Syllabus sections
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