The Periodic Table

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Across
  1. 1. Element essential for making strong, lightweight aircraft alloys
  2. 3. Element essential to hemoglobin; found in steel
  3. 4. Element vital in fertilizers; part of DNA and ATP
  4. 5. Element used in bulb filaments and high-melting alloys
  5. 7. This noble gas glows with a bright orange-red light in advertising signs
  6. 11. Metal used in batteries, stainless steel, and superalloys
  7. 13. Metal used to galvanize steel to prevent rust
  8. 15. Element used in nuclear fuel rods
  9. 16. Element used in batteries, especially in rechargeable ones
  10. 18. Halogen used in antiseptic solutions
Down
  1. 2. A radioactive element used in smoke detectors
  2. 4. A precious metal used in catalytic converters and anti-cancer drugs
  3. 6. Silvery metal used in magnets and rechargeable batteries
  4. 8. Nonmetal used in water disinfection and PVC production
  5. 9. Element used in thermometers, lamps, and dental amalgams (though decreasing for safety reasons)
  6. 10. Gas used in weather balloons because it’s lighter than air
  7. 12. Element used in radiation shielding and crystal glass
  8. 14. A metal used in solar panels and semiconductors, often purified to high levels
  9. 17. Soft metal used in solder, historically in plumbing