States of matter

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Across
  1. 6. A solid with a regular, repeating pattern.
  2. 7. The change from solid to liquid.
  3. 10. The amount of space that a substance or object occupies.
  4. 13. The act of particles changing position.
  5. 15. Property of gases allowing them to be reduced in volume by pressure.
  6. 17. The theory explaining the motion of particles in matter.
  7. 18. A state of matter that has a fixed volume but no fixed shape.
  8. 21. Anything that occupies space and has mass.
  9. 22. Increase in volume due to heat.
  10. 23. A condition or form that matter can take.
  11. 24. Changes that do not alter the composition of a substance.
  12. 25. Event when particles bump into each other.
Down
  1. 1. The capacity to do work or cause change.
  2. 2. Influences causing particles to interact.
  3. 3. Type of movement particles in a liquid exhibit.
  4. 4. The process of a gas turning into a liquid.
  5. 5. A measure of the average kinetic energy of particles.
  6. 8. A state of matter with neither fixed shape nor volume.
  7. 9. Force pulling particles together.
  8. 11. A state of matter with fixed shape and volume.
  9. 12. A gas or vapor phase of a substance.
  10. 14. The change from liquid to solid.
  11. 16. The transition from solid directly to gas.
  12. 19. Small constituents of matter in kinetic theory.
  13. 20. The spreading of particles from high to low concentration.