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
Teaching approaches
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1 approach
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?
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
Learning resources
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Explore the learning path
3 before · 4 after
Before
This concept
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