periodic table crossword puzzle

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Across
  1. 4. Used in pencils and diamonds (6 letters)
  2. 5. This element’s symbol is H (8 letters)
  3. 7. soft metal that reacts with water (7 letters)
  4. 8. The gas used in glowing signs (4 letters)
  5. 10. Used to make foil, very light (9 letters)
  6. 12. Found in glass and computer chips (7 letters)
Down
  1. 1. The element that’s essential for breathing (8 letters)
  2. 2. Symbol is Na (6 letters)
  3. 3. Its symbol is Fe, known for strength (4 letters)
  4. 6. Found in table salt (8 letters)
  5. 9. This element strengthens bones (7 letters)
  6. 11. Shiny,never rusts, very expensive (4 letters)