CAIE IGCSE Chemistry 12.4.2 Suggest Suitable Separation and Questions
Work through real CAIE IGCSE Chemistry questions to design separation sequences for solids, solutions and liquid mixtures.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- choose filtration to remove an insoluble precipitate or solid from a solution
- choose crystallisation after dissolving a soluble solid and filtering insoluble impurities
- choose fractional distillation for miscible liquids with different boiling points
- use solubility and boiling-point information to design a suitable sequence of separation steps
CAIE IGCSE Chemistry 12.4.2 Suggest Suitable Separation and Questions question 1
[Maximum number: 1]
A mixture contains salt, sand and sulfur.
Salt dissolves in water but not in xylene.
Sulfur dissolves in xylene but not in water.
Sand does not dissolve in water or xylene.
What is the order of the processes used to separate the salt, the sand and the sulfur from the mixture?
A
add water → filter → add xylene to the filtrate → filter
B
add water → filter → add xylene to the residue → filter
C
add xylene → filter → add water to the filtrate → filter
D
add xylene → filter → add xylene to the residue → filter
B
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