Periodic Table Crossword

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Across
  1. 3. Positively charged particle
  2. 5. All the elements organized together
  3. 9. Columns on the periodic table
  4. 10. Symbol of the element
  5. 11. All on the periodic table
  6. 13. Number of protons found in an element
Down
  1. 1. Found on the "Stair step"
  2. 2. Compound symbol is H2O
  3. 4. Negatively charged particle
  4. 6. Mass of a element
  5. 7. First element on the periodic table
  6. 8. Rows on the periodic table
  7. 10. Foundation to everything
  8. 12. Elements without metal