What's covered
States of matter12
Particle model10
Sample questions
A taste of the 22 questions in this topic — answers marked. Sign up to practise the full set with spaced repetition.
1Particle model
What does the particle model state?
- •All matter is made of one element
- ✓All matter is made of tiny particles
- •Matter is made of cells
- •Particles are visible to the eye
2States of matter
Which states of matter are there?
- •Hot and cold
- •Just solid and liquid
- ✓Solid, liquid, gas
- •Wet and dry
3Particle model
What happens to particle motion when heated?
- •Particles become heavier
- •Particles get smaller in size
- ✓Particles move faster
- •Particles stop moving completely
4States of matter
How are particles arranged in a solid?
- •Far apart and moving freely
- •In long parallel chains
- •Loosely packed and free to flow
- ✓Tightly packed in fixed positions
5Particle model
What is diffusion?
- •Particles collide and bond together
- •Particles dissolve from solid into liquid
- •Particles move from low to high concentration
- ✓Particles spread from high to low
6States of matter
How are particles arranged in a gas?
- ✓Far apart, moving in random directions
- •In long single layers
- •Loosely packed in regular patterns
- •Tightly packed in fixed positions
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