particle theory

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Across
  1. 2. to change directly from a solid to a gas without first melting
  2. 4. anything that has mass and takes up space
  3. 5. squeezed to take up less space
  4. 7. the process of different substances mix together resulting in the random motions of their particles
  5. 8. to change a solid into a liquid
  6. 10. the continuous circulation of earths water
  7. 12. evaporation of water from a plants leaves
  8. 14. water in a gaseous state
  9. 15. a state of matter between gases and solids
  10. 16. a state of matter that fills the whole of it's container
  11. 17. to stay the same
  12. 19. the temperature at which a solid turns into a liquid
  13. 21. the arrangement of particles in a substance
  14. 22. to change a gas into a liquid
  15. 23. a state of matter in which there is a 3D structure
Down
  1. 1. to decrease in size or volume
  2. 3. to change a liquid into a solid
  3. 6. the energy of motion
  4. 9. it's volume can change when pressure is applied
  5. 11. to increase in size or volume
  6. 13. the amount of space that an object contains
  7. 18. all matter is made up of particles
  8. 20. the amount of physical matter an object contains