Year 7 · Science · beta

Solutions

This unit explores the concepts of pure substances, mixtures, and diffusion in liquids and gases. It emphasises accuracy, precision, and the use of appropriate techniques during investigations. The focus is on making predictions and recording reliable observations.

This is an attributed Oak National Academy lesson sequence, not a completed or academically approved DASKEREL course. Supporting transcripts may depend on video, images, practical equipment or teacher explanation. Follow each lesson’s supervision guidance. For religious education and RSHE, follow the school’s syllabus, policy and safeguarding procedures.

Prior knowledge

  • Some materials will dissolve in a liquid to form a solution.
  • Dissolving is a reversible change.
  • Changes of state are reversible.
  • Some changes result in the formation of a new substance.

Source curriculum references

  • Pay attention to objectivity and concern for accuracy, precision, repeatability and reproducibility
  • Make predictions using scientific knowledge and understanding
  • Use appropriate techniques, apparatus, and materials during fieldwork and laboratory work, paying attention to health and safety
  • Make and record observations and measurements using a range of methods for different investigations; and evaluate the reliability of methods and suggest possible improvements
  • Identify further questions arising from their results
  • The concept of a pure substance
  • Mixtures, including dissolving
  • Diffusion in terms of the particle model
  • Diffusion in liquids and gases driven by differences in concentration

Oak source metadata. DASKEREL has not independently verified school-level coverage.

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