Periodic Table Crossword Puzzle

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Across
  1. 4. The point at which a liquid boils and turn to a gas
  2. 5. the horizontal columns on the Periodic Table
  3. 6. A negatively charged subatomic atom that is in the nucleus
  4. 8. The point at which a solid melts
  5. 9. A positively charged subatomic atom that is in the nucleus
  6. 11. The amount of protons in an atom
  7. 14. The center of an atom that contains protons and neutrons
  8. 15. A section that has properties of both metals and non-metals
  9. 16. The largest section of the periodic table
  10. 18. A neutral charged subatomic atom that is in the nucleus
  11. 21. A property of metals that describes it’s metallic shine
Down
  1. 1. An abbreviation to represent an element
  2. 2. The symbol for this element is H
  3. 3. The ability of an object to allow heat or electricity to pass through it
  4. 7. A substance with two or more different elements
  5. 10. What an Element is called
  6. 11. The mass of an element
  7. 12. The Symbol for this element is O
  8. 13. The second largest section of the periodic table
  9. 17. Anything that takes up space and has mass
  10. 19. The purest form of a single substance
  11. 20. the vertical columns on the Periodic Table