Particle model of substances in the gas state
I can describe how the arrangement and movement of particles alters when a substance changes from the liquid to gas state.
Particle model of substances in the gas state
I can describe how the arrangement and movement of particles alters when a substance changes from the liquid to gas state.
Lesson details
Key learning points
- In the gas state a substance can flow, it fills the whole of a container and can be compressed.
- In the gas state, particles of a substance are moving very quickly in random directions with gaps between them.
- In the gas state, particles have enough energy to be free of the attractive forces between them.
- There is nothing at all between the particles in a gas.
Common misconception
The idea that there is air between the particles in a gas.
Emphasis on explaining that air contains particles and has nothing between them.
Keywords
Gas state - Substances in the gas state can be compressed to take up less space.
Particle - All substances are made of tiny particles, these move differently depending on the state of matter of the substance.
Random movement - In a gas state the particles have a random movement, they move in all directions.
Compress - Compress means that something can be made to take up less space than before. Substances in the gas state can be compressed.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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