The Periodic Table Crossword Puzzle

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Across
  1. 1. Symbol is O
  2. 5. Has elements that are in the middle of nonmetals and metals
  3. 7. The group on the right end of the Periodic Table
  4. 10. Found in supernovas and is very strong
  5. 11. Consists of many, shiny and strong metals
  6. 12. Also called the fluorine group
  7. 14. It has elements that are shiny, soft and highly reactive
  8. 16. The rows of the Periodic Table
  9. 17. Superman's home planet and a Noble Gas
  10. 18. The symbol is Cu
  11. 19. A family that consist no metallic elements
  12. 20. Highly reactive elements
Down
  1. 2. Building Blocks of Matter
  2. 3. Most abundant element in the Earth's Crust
  3. 4. Includes shiny and silvery-white elements
  4. 6. The columns of the Periodic Table
  5. 8. This family is also known as the Nitrogen Group
  6. 9. This family includes 3 of the oldest elements
  7. 13. Something to represent an element
  8. 15. Also known as Rare Earth Metals