Periodic Table Crossword Puzzle

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Across
  1. 5. The items organized in the periodic table
  2. 8. Abbreviation for the name of the element
  3. 10. A shiny, yellow metal typically used in jewelry
  4. 14. Positive charged particles that make up an atom
  5. 15. A gas that all living creatures need to breathe
  6. 16. The way that the periodic table is organized
  7. 17. The material that pennies are made from
  8. 19. Poor conductors of heat and electricity
  9. 20. A negatively charged particle that is found in atoms
Down
  1. 1. Atoms of the same element
  2. 2. the material in pencils that is used to write
  3. 3. Numbers found on the left side of the periodic table
  4. 4. Found in between metals and Nonmetals on the periodic table
  5. 6. The group of elements that is found in the center of the periodic table
  6. 7. The average mass of the atoms in an element
  7. 9. The group of elements that takes up the left side of the periodic table
  8. 11. The only Nonmetal on the left side of the periodic table
  9. 12. Number 23 on the periodic table
  10. 13. The identity of an element
  11. 18. The numbers on the top of the periodic table