The Impossible Crossword Puzzle

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Across
  1. 2. an elemental component of something found in the sea ,very reactive to water
  2. 7. ancient anatolian civilization
  3. 8. above-ground part of a fungus
  4. 10. a type of musical tool related to scales
  5. 11. an elemental component of glass metalloid
  6. 12. used in preserving dead organisms
  7. 13. renders an argument invalid
  8. 15. a mishearing of a word or phrase that typically no longer makes sense after it is misheard
Down
  1. 1. two sides of the same coin
  2. 3. allegedly an "art form"
  3. 4. a representation of a value
  4. 5. Mariah Carey
  5. 6. dots and dashes dit dah
  6. 9. type of printed book
  7. 14. a phrase no one says even though they should