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Schemes of Work
QCA

Science at key stage 3    (Year 7)

Unit 7H: Solutions

QCA

Resources

Resources include:

  • prepared data about:
  • the solubility of different solids in water
  • the solubility of solids in different solvents
  • the variation of solubility of solids in water with temperature (as tables and graphs)
  • chromatograms for interpretation
  • software simulation of particles in mixtures
  • secondary sources showing uses of chromatography, eg caffeine determination in drinks, identifying traces of photoallergens (causing irritation) in germicides and soaps, identification of sugars in urine, identification of traces of drugs in horses

Sections in this unit

This unit is divided into sections. Each section contains a sequence of activities with related objectives and outcomes. You can view this unit by moving through the sections or print/download the whole unit.
1. How can we tell whether a liquid is a mixture?
2. How much salt can we get from rock salt?
3. What happens to the solute when a solution is made?
4. How can we separate solvents from solutes?
5. a. How can chromatography separate and identify substances in mixtures?
6. b. How can chromatography separate and identify substances in mixtures?
7. Checking progress
8. Is there a limit to the amount of solid that will dissolve in a liquid?
9. What else affects solubility?
10. Reviewing work