Periodic Table

1234567891011121314151617181920
Across
  1. 2. An atom with a charge.
  2. 4. Number number of protons an atom has.
  3. 6. How many families are on the periodic table?
  4. 8. Element that goes by Ds.
  5. 13. The rows in the periodic table.
  6. 14. What does NaCl stand for?
  7. 15. Number of man made elements.
  8. 16. Most rare element.
  9. 18. Special element because it is on the left side of the stair step line.
  10. 19. What does the element K stand for?
Down
  1. 1. The smallest particle of an element that retains the element properties.
  2. 3. Right of stair step line.
  3. 5. Along stair step line.
  4. 7. The columns that share chemical properties.
  5. 9. Number Sum of the protons and neutrons.
  6. 10. Atoms of the same element that have different numbers or neutrons.
  7. 11. Creator of the table.
  8. 12. Heaviest element.
  9. 17. Common model used to represent an atom.
  10. 20. Only metal liquid at room temperature.