The Periodic Table

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Across
  1. 3. A vital element for teeth and bones.
  2. 4. A gas that is used in red glowing signs.
  3. 7. Name of the group in the periodic table that contains gases that don't react with anything.
  4. 8. An metal that is liquid at room temperature.
  5. 9. Name of the group in the periodic table that contains highly reactive metals.
  6. 12. The group of non-metals in the periodic table that are highly toxic and smells of swimming pools.
  7. 14. Argon is a better _______ than air.
  8. 15. The most common element in the universe.
  9. 16. This non-metal is used in toothpaste to prevent decay.
Down
  1. 1. A form of Carbon that is so hard it cuts through almost anything.
  2. 2. A metal that creates a bright shining light when burnt.
  3. 5. A vital compund that contains Hydrogen and Oxygen.
  4. 6. A vital compound that contains Carbon and Oxygen.
  5. 7. A non-metal that's the most common element in the Earth's atmosphere.
  6. 10. An element all living things contain.
  7. 11. A shiny dark-grey solid that is also a form of Carbon.
  8. 13. Dioxide The name of the product of Silicon and Oxygen.