Periodic Table

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Across
  1. 2. essential for breathing
  2. 5. a heavy metal once used in paint and gasoline
  3. 6. a yellow nonmetal known for its rotten egg smell
  4. 7. a noble gas used in high intensity lamps
  5. 9. a metal used to make steel and found in blood
  6. 10. makes up about 78% of Earth's atmosphere
  7. 12. a gas used in balloons that makes voices sound high pitched
  8. 13. A metalloid used in computer chips.
  9. 14. a metal that reacts violently with water
Down
  1. 1. a metal used in electrical wiring and coins
  2. 3. A metal that burns with a bright white flame.
  3. 4. a greenish gas used to disinfect water
  4. 8. a radioactive element used in nuclear power
  5. 11. a soft metal used in rechargeable batteries
  6. 12. the lightest element in the universe