States of Matter Crossword

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Across
  1. 2. Caused when gas particles hit the wall of the container (P_____)
  2. 4. The change of state: solid to a gas (S______)
  3. 5. The change of state: Gas to a solid (d______)
  4. 7. any substance that has mass and takes up volume (m_____)
  5. 8. State of matter where particles are in a fixed position (S______)
  6. 10. Type of energy particles have when they move (K______)
  7. 11. The movement of particles from a high to a low concentration (D_______)
  8. 12. The mass of a substance per volume (D_____)
Down
  1. 1. The only state of matter which can be compressed (G___)
  2. 3. The change of state: liquid to a gas (E______)
  3. 6. The change of state: solid to a liquid (M______)
  4. 9. State of matter where particles can flow over each other (L______)