Properties of matter

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Across
  1. 2. ability to be hammered or pressed without cracking
  2. 7. poisonous to consume or touch
  3. 8. ability to be dissolved in water
  4. 12. ability to light it on fire
  5. 13. going from a solid to a liquid
  6. 15. causes metal or stone to break down/rust
  7. 17. a fluid's resistance to flow
  8. 18. high numbers on pH scale
  9. 19. going from a liquid to a gas
Down
  1. 1. solid, liquid or a gas.
  2. 3. how shiny the surface of a material is
  3. 4. low numbers on pH scale
  4. 5. how much matter is in something
  5. 6. what a human eye will see when looking at an object
  6. 9. how long something is
  7. 10. amount of space a material take up
  8. 11. ability to withstand damage (like strength)
  9. 14. how much stuff is packed into a certain space
  10. 16. giving of radiation or particles
  11. 20. how/if the material smells