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Mixture Separation Techniques

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Mixture Separation Techniques

📚 Part 1: WALT, Success Criteria & Multiple Choice

WALT: We are learning to identify and choose appropriate methods to separate mixtures (filtration, evaporation, distillation, chromatography, magnetism).

Success criteria:

1. I can match each technique to a simple description.

2. I can choose the correct method for a given mixture.

3. I can explain one safety step for practical separation work.

1. Which technique separates an insoluble solid from a liquid using filter paper?

Filtration

Evaporation

Distillation

Chromatography

2. Which technique is best to recover dissolved salt from seawater?

Filtration

Evaporation (or crystallisation)

Magnetism

Sieving

3. Which method separates substances based on boiling point differences?

Chromatography

Distillation

Filtration

Magnetism

4. Which technique is used to separate different coloured pigments on paper?

Chromatography

Distillation

Evaporation

Filtration

5. Match each technique (left) with the correct description (right). Draw lines between columns.
A. Filtration
B. Evaporation
C. Distillation
D. Magnetism
1. Uses heat and condensation to purify liquids (collecting vapour).
2. Uses a magnet to remove magnetic solids from a mixture.
3. Removes a liquid by turning it into vapour, leaving solids behind.
4. Uses filter paper to separate solids from liquids.

✏️ Part 2: Short Answers, Practical & Teacher Notes

6. Explain in one sentence why filtration will not remove dissolved salt from water.
7. You have a mixture of sand, iron filings and salt (dry). Outline clear step-by-step actions to separate and recover each substance.
8. Draw and label a simple distillation apparatus (heat source, boiling flask, condenser, collection vessel).
9. Give one safety precaution when heating liquids in a separation experiment.

Differentiation strategies:

• Support: Provide a labelled diagram and vocabulary list; allow paired work and scribed answers.

• Most students: Complete MCQs, matching and short answers independently.

• Scaffold: Use sentence starters for step-by-step questions (e.g. "First..., Next..., Finally...").

Extension activities (for advanced learners):

• Design an experiment to separate a salt–sugar mixture and explain how you would test purity.

• Research and report on industrial separation techniques (e.g. fractional distillation of crude oil).

Dyslexia-friendly reading options:

• Read instructions aloud or use text-to-speech.

• Provide high-contrast coloured overlays or printed copies with larger spacing.

• Allow extra time and use clear, short sentences for questions.

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