The Periodic Table

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12345678910111213141516171819
Across
  1. 2. - Heavy metal used in batteries and construction materials
  2. 5. - Radioactive element used as fuel in nuclear power plants
  3. 7. - Element that makes up about 21% of the Earth's atmosphere
  4. 9. - Light gas used to fill balloons and airships
  5. 14. - Shiny metal used in jewelry and coins
  6. 16. - Silvery-white metal used to coat other metals and make alloys
  7. 18. - Halogen element used to disinfect water and bleach textiles
  8. 19. - Gas that makes up about 78% of the Earth's atmosphere
Down
  1. 1. - Liquid metal that is toxic to humans
  2. 3. - Element that forms the basis of all known life on Earth
  3. 4. - Inert gas that makes up about 1% of the Earth's atmosphere
  4. 6. - Inert gas commonly used in advertising signs
  5. 8. - Yellow metal used in jewelry and electronics
  6. 9. - Lightest and most abundant element in the universe
  7. 10. - Element used to make computer chips and solar panels
  8. 11. - Metallic element that is essential for the human body to function properly
  9. 12. - Shiny metal used in jewelry and catalytic converters
  10. 13. - Reddish-brown metal used in electrical wiring and plumbing
  11. 15. - Element commonly used to coat other metals to prevent corrosion
  12. 17. - Element that is an important component of table salt