Year 7 · Science · beta

Solid, liquid, gas states and changes of state

This unit covers the properties of solids, liquids, and gases using the particle model, including gas pressure. It explains changes of state in terms of the particle model while developing skills in using appropriate techniques, apparatus, and materials in lab work.

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

  • Materials can be grouped as solids, liquids or gases.
  • Solids hold their shape.
  • Liquids form a pool not a pile.
  • Gases can escape from an unsealed container.
  • Some materials change state when they are heated or cooled.
  • Water can evaporate into a gas.
  • Water evaporates more quickly when the temperature is higher.
  • Water vapour can condense into water.

Source curriculum references

  • Use appropriate techniques, apparatus, and materials during fieldwork and laboratory work, paying attention to health and safety
  • The properties of the different states of matter (solid, liquid and gas) in terms of the particle model, including gas pressure
  • Changes of state in terms of the particle model

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

Loading lessons…