C2.2.1 Mixtures

Video Resource


Practical : Separate mixtures


  • 1 x Mixture of sand, salt, water, iron filings
  • 1 x Funnel
  • 1 x Filter paper
  • 1 x Magnet
  • 1 x Conical Flask
  • 1 x Beaker
  • 1 x Evaporating dish & Holder

Students sperate the mixture, filter sand and filings. Use magnet for filings. Boil off water if there is time to evapourate the salt.

Experiment: -

  • LEGO kits (from home)

Salt refining Risk assessment:

  • Goggles needed.
  • Bunsens

Lego Risk assessment:

  • No risk


• State that parts of mixtures are not joined together

• State that different substances in mixtures have their own melting points

• Choose a simple separation technique with help

• Describe particle arrangements in mixtures

• Explain how to identify pure substances

• Select appropriate separation techniques for different mixtures

• Use particle models to represent mixtures

• Comment on a substance’s purity by interpreting temperature change data

• Explain why separation techniques are suitable, in terms of the properties of constituent substances