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What can you recall?
explain
Recall and explain
explain: give reasons and connect them to evidence.
Keep the diagram closed. Explain how distillation recovers water. Describe coolant flow and state what the thermometer bulb measures.
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Scope and sources
Cambridge IGCSE Chemistry 0620 · 2026–2028 v2 · Original learning materials.
0620 12.4.1(d/e): simple and fractional distillation; bounded12.4.2 method selection. Nonvolatile salt solution and a hypothetical miscible non-azeotropic A/B mixture. No petroleum fractions, complete purity testing or quantitative equilibrium.
Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.
Official Cambridge syllabus