0654.C12.4.01 — Describe and explain methods of separation and purification using: (a) . a suitable solvent (b) . filtration (c) . crystallisation (d) . sim: past paper questions
Real questions on 0654.c12.4.01 — describe and explain methods of separation and purification using: (a) . a suitable solvent (b) . filtration (c) . crystallisation (d) . sim
The newest 5 of 5 written questions. Open one to see it on the real paper.
- 0654/32 · May/June 2025 · Q8a(i)[1]
State the number of different elements shown in this formula. (i)
See it on the paper → - 0654/32 · May/June 2025 · Q8a(ii)[1]
State the total number of atoms shown in this formula.
See it on the paper → - 0654/21 · October/November 2024 · Q15[1]
Which piece of apparatus cannot be used to measure the volume of gas?
See it on the paper → - 0654/11 · October/November 2020 · Q15[1]
Which two processes are used to separate the water from the chalk and salt?
See it on the paper → - 0654/21 · May/June 2019 · Q20[1]
Which method is used to make the solution crystallise?
See it on the paper →
What examiners said
Three was the most common answer, but answers in the range of 2–9 were commonly seen as suggestions. Some candidates stated two because it contained calcium and carbonate.
— Examiner report, May/June 2025, 0654/32 Q8(a)(i) (Cambridge)
This proved more challenging to candidates than 8(a)(i). 50 was a common incorrect answer, a result of adding up the masses of the atoms but many other figures were given.
— Examiner report, May/June 2025, 0654/32 Q8(a)(ii) (Cambridge)
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