Air

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Across
  1. 3. Air can't be seen but moves ____ through space.
  2. 5. Air is ____ than water.
  3. 6. Because of diffusion, perfume is ____ through the air
  4. 9. Particles are too small to be seen by an ordinary ____.
  5. 12. The 4th state of matter is called ___.
  6. 14. There are ____ main states of matter.
  7. 15. Atoms in gasses move the ____.
Down
  1. 1. Materials are identified by its ____.
  2. 2. The movement from a higher concentration to a lower concentration is called ____.
  3. 4. ____ is used to measure liquids.
  4. 7. Gasses and _____ go through diffusion.
  5. 8. The Mohn's scale allows the mineral's scratch ____ to be classified.
  6. 10. A million atoms lined up would be as thick as a ____.
  7. 11. Everything around us is made of ____.
  8. 13. Different measurements to identify material are temerature, hardness, color, and ____.
  9. 16. Tiny particles make up ____.
  10. 17. Solid atoms are ____ packed.