Matter

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Across
  1. 3. The amount of matter in an object
  2. 7. gas becomes a liquid.
  3. 8. liquid becomes a gas
  4. 11. This has mass and takes up space
  5. 13. liquid becomes a solid
  6. 15. A trait of matter that can be observed or measured
  7. 16. The amount of space an object occupies
  8. 17. reflects the degree of packing of particles
  9. 18. Tightly packed particles
  10. 20. Ability of a substance to be stretched into a wire.
  11. 21. how the substance looks and feels.
Down
  1. 1. The way that a substance reflects light
  2. 2. how the object absorbs and reflects light
  3. 4. solid becomes a gas
  4. 5. Ability of a substance to be hammered flat and to retain the new shape.
  5. 6. The color left behind when a material is rubbed
  6. 9. Particles that are very far apart and move freely
  7. 10. Measure of how easily a material is scratched
  8. 12. A measure of the average kinetic energy
  9. 14. solid becomes a liquid
  10. 18. The "habit" of an object or the form
  11. 19. Packed particles but still have space between them