Y7 - Particles and their behaviour

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Across
  1. 2. A change of state from solid to liquid.
  2. 4. In a solid, particles ________ on the spot.
  3. 5. How heavy a substance is for its size, or how close together its particles are.
  4. 7. The amount of 3D space an object takes up.
  5. 8. A state of matter that can be compressed.
  6. 10. A state of matter that has a fixed shape and volume.
  7. 12. The specific temperature at which a solid changes into a liquid.
  8. 13. The movement of particles from high to low concentration.
  9. 15. When a substance melts, its particles gain __________.
Down
  1. 1. When a substance melts, its particles move more ___________.
  2. 3. A state of matter that can flow, but cannot be compressed.
  3. 6. A change of state from liquid to gas that can happen to particles at the surface of a liquid, at any temperature.
  4. 9. A change of state from gas to liquid.
  5. 11. A change of state from liquid to gas where bubbles are formed.
  6. 14. A change of state from liquid to solid.