The Particle Model
Use the particle model to explain the properties of solids, liquids, and gases — including differences in arrangement, movement, and spacing — and apply the model to explain density, compressibility, and the anomalous expansion of water
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Practise the bounded task in The Particle Model; see exact limits before inferring broader coverage.
Practise the bounded task in The Particle Model; see exact limits before inferring broader coverage.
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Check understanding
- Draws particle diagrams for solids, liquids, and gases showing correct arrangement and spacing
- Explains why gases are compressible but liquids and solids are not
- Explains why ice floats on water using the anomalous expansion of water
- Uses particle spacing to explain why gases are much less dense than solids and liquids
“If your child was asked why you can squash a balloon but not a water bottle full of liquid, could they explain using the idea of particles what's different about gases and liquids?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Matter & Materials
- Age range
- Ages 11–12
Standards