Chemistry Crossword

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Across
  1. 2. A yellow, shiny, and expensive metal
  2. 4. Phosphorus, hydrogen, yttrium, sulfur, iodine, cesium
  3. 6. The primary component of air
  4. 9. The most abundant element in the universe
  5. 12. This element is no longer used in thermometers
  6. 13. This strong element is the main component of steel
  7. 14. Barium, sodium, sodium
  8. 16. This one smells like rotten eggs
  9. 17. This element shares a name with a coin
Down
  1. 1. We use this metal to make electric wires
  2. 3. Balloons filled with this gas make your voice sound squeaky
  3. 5. A rare, shiny element used to make jewelry
  4. 7. We need this to breathe
  5. 8. This element has the same name as many bright colors
  6. 10. Primary constituents of matter
  7. 11. The planet where Superman's weakness is found
  8. 14. Boron, oxygen, oxygen, potassium, sulfur
  9. 15. The element of life