Part 4 of 4

Which separation should come first?

Describe / Explain

Try it yourself

Describe: give the features or what happens. Explain: give reasons and connect them to evidence.

Dry L and M are mixed. Water dissolves L only; paper retains M. Neither reacts with water. L stays unchanged and non-volatile during the teacher-approved water-removal method. Order the actions to collect L and M separately.

Put these in order

First

Second

Third

Explain why filtration must come before water removal, following both solids.

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Scope and sources

Cambridge IGCSE Chemistry 0620 · 2026–2028 v2 · Original learning materials.

Solvent, solute, solution, residue and filtrate; selective dissolution, filtration and bounded method choice. The experiment includes magnetic collection and salt recovery. Saturation, full crystallisation, distillation and chromatography need later lessons.

Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.

Official Cambridge syllabus