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Unit Overview: Physical and chemical changes

  • Know that some materials will dissolve in liquid to form a solution, and describe how to recover a substance from a solution
  • Use knowledge of solids, liquids and gases to decide how mixtures might be separated, including through filtering, sieving and evaporating
  • Demonstrate that dissolving, mixing and changes of state are reversible changes
  • Explain that some changes result in the formation of new materials, and that this kind of change is not usually reversible, including changes associated with burning and the action of acid on bicarbonate of soda.

For next step we recommend the unit: States of matter.

Lessons:

6 lessons