0654.C2.2.02 — State the relative charges and relative masses of a proton, a neutron and an electron: past paper questions
Real questions on 0654.c2.2.02 — state the relative charges and relative masses of a proton, a neutron and an electron
The newest 6 of 6 written questions. Open one to see it on the real paper.
- 0654/31 · October/November 2025 · Q8a(i)[1]
State the number of protons in this calcium ion. (i)
See it on the paper → - 0654/31 · October/November 2025 · Q8a(ii)[1]
State the number of electrons the calcium atom loses when it becomes a calcium ion.
See it on the paper → - 0654/33 · May/June 2025 · Q7a(ii)[1]
Deduce the number of neutrons in this atom. number of neutrons =
See it on the paper → - 0654/42 · May/June 2025 · Q5b[1]
A carbon atom has 6 neutrons. mass number = State the mass number of this carbon atom.
See it on the paper → - 0654/12 · May/June 2023 · Q16[1]
How many neutrons are in this atom?
See it on the paper → - 0654/12 · May/June 2023 · Q24[1]
Which element is used in the manufacture of sulfuric acid?
See it on the paper →
What examiners said
The majority of candidates gave the correct answer. Some incorrectly used 29 or 64.
— Examiner report, May/June 2025, 0654/33 Q7(a)(ii) (Cambridge)
Many candidates gave the mass number of 12. The most common incorrect number given was 6.
— Examiner report, May/June 2025, 0654/42 Q5(b) (Cambridge)
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