Physical changes in matter.

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Across
  1. 2. Speed.
  2. 7. Squeezes things.
  3. 8. Rips things.
  4. 9. Friction from the air.
  5. 11. Floating.
  6. 13. Able to move over or around something.
  7. 16. Changes, then changes back.
  8. 18. Newton's first law of motion.
  9. 19. Twists things.
  10. 20. Resistance to motion.
Down
  1. 1. Cannot be changed.
  2. 3. Pulls things from either end.
  3. 4. How tightly packed the molecules are.
  4. 5. Changes, then doesn't change back.
  5. 6. Draws you to the largest thing around.
  6. 10. The area air touches.
  7. 12. Attraction of magnetic fields.
  8. 14. Position so that friction is minimized.
  9. 15. Newton's third law of motion, action and ______.
  10. 17. Bends things.
  11. 20. A push or a pull.