phases of matter

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Across
  1. 3. The process by which a liquid or solid changes to a gas
  2. 7. A physical change process in which energy must be added in order for the change to take place
  3. 9. Particles that are closely packed together in fixed positions
  4. 10. Solid, liquid, gas
  5. 11. A condition by which two opposing changes occur at equal rates in a closed system
  6. 12. Liquids that evaporate easily due to very weak forces of attraction
  7. 13. Spontaneous mixture of gas particles caused by random motion
  8. 14. The process by which a solid changes to a gas
Down
  1. 1. The measure of the force exerted by a gas above a liquid
  2. 2. A cooling process
  3. 4. Pertaining to motion
  4. 5. The point in which all three states of matter are in equilibrium
  5. 6. The amount of energy required to melt one gram of solid at the substance's melting point
  6. 8. The process by which a gas becomes a liquid
  7. 11. Type of collision in which particles bounce off walls with the same speed that it hit with