matter in our surrounding

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Across
  1. 4. The he process by which a solid turns into a liquid
  2. 6. The process by which a gas turns into a liquid
  3. 7. The spreading of particles from a region of higher concentration to a region of lower concentration
  4. 9. A state of matter with tightly packed particles
  5. 12. space the space present between atoms
  6. 15. Energy The energy possessed by a body due to its motion
  7. 16. Heat of Vaporization The heat required to convert a liquid into a gas at its boiling point
  8. 17. The ability of a substance to decrease in volume under pressure
  9. 18. Heat The heat required to change the state of a substance without changing its temperature
  10. 19. Heat of Fusion The heat required to convert a solid into a liquid at its melting point
Down
  1. 1. The amount of space an object occupies
  2. 2. The process by which a liquid turns into a solid
  3. 3. The rapid vaporization of a liquid
  4. 5. A state of matter with a definite shape and volume
  5. 8. Another term for melting
  6. 10. The transition of a substance directly from solid to gas
  7. 11. A state of matter without a definite shape or volume
  8. 13. The process by which a liquid turns into a gas
  9. 14. A measure of the average kinetic energy of particles
  10. 18. A state of matter with a definite volume but no definite shape