1) Which state of matter is the hardest to compress? a) Solid b) Liquid c) Gas 2) In which state of matter do particles have most energy? a) Solid b) Liquid c) Gas 3) Which word describes the spreading out and mixing of particles? a) Gas Pressure b) Diffusion c) Vibrating d) Moving 4) In which state of matter are particles unable to diffuse? a) Solid b) Liquid c) Gas 5) What happens to gas pressure when a gas is compressed? a) It stays the same b) It increases c) It decreases 6) Which best describes the particles in a solid? a) They are able to diffuse b) They do not move c) They vibrate but do not change places d) They can move in all directions 7) What happens to gas pressure inside a container if gas particles are removed from it? a) It decreases b) It stays the same c) It increases 8) What happens to particles when there is an increase in temperature? a) They move at the same speed b) They move more slowly c) They move more quickly d) They stop moving

Year 7 The Particle Model Diffusion and Gas Pressure

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