Separating Mixtures
Select and carry out appropriate separation techniques for different types of mixtures: filtration (insoluble solids), distillation (liquids by boiling point), crystallisation (dissolved solids), and chromatography (coloured substances)
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“If your child needed to separate salt from sand mixed together in water, could they describe two stages of separation, the equipment needed, and explain why each step works?”
Full guide and materials
- Activity. Select and carry out appropriate separation techniques for different types of mixtures: filtration (insoluble solids), distillation (liquids by boiling point), crystallisation (dissolved solids), and chromatography (coloured substances)
What to notice. Selects the correct separation technique for a given mixture with justification • Describes the steps of simple distillation and explains why it works • Interprets a chromatography result (Rf values, number of components) • Explains why filtration removes sand from water but not salt
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If your child needed to separate salt from sand mixed together in water, could they describe two stages of separation, the equipment needed, and explain why each step works?
Select and carry out appropriate separation techniques for different types of mixtures: filtration (insoluble solids), distillation (liquids by boiling point), crystallisation (dissolved solids), and chromatography (coloured substances)
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Check understanding
- Selects the correct separation technique for a given mixture with justification
- Describes the steps of simple distillation and explains why it works
- Interprets a chromatography result (Rf values, number of components)
- Explains why filtration removes sand from water but not salt
“If your child needed to separate salt from sand mixed together in water, could they describe two stages of separation, the equipment needed, and explain why each step works?”
Curriculum record
- Type
- Procedural
- Subject
- Science
- Domain
- Matter & Materials
- Age range
- Ages 11–13
Standards