Science Crossword Puzzle

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Across
  1. 5. a "stealing" bond
  2. 7. Rule of eight
  3. 10. SiO2
  4. 11. Substance made of hydrogen and oxygen
  5. 12. Pink Mineral
  6. 14. Substance that cannot be broken down
  7. 15. Chemical symbol Ag
  8. 17. Earthy green mineral
  9. 19. Smallest part of an element
  10. 20. Fools Gold
Down
  1. 1. one of the four basic properties of matter
  2. 2. Stinky igneous rock
  3. 3. one of the three phases of matter
  4. 4. Greek word meaning to change or form
  5. 6. a "Sharing" bond
  6. 8. outermost shell
  7. 9. Moes _____ Scale
  8. 13. cooled underground
  9. 16. Nickname for igneous rocks
  10. 18. fifth hardest mineral