Science chapters cross-word

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Across
  1. 4. 1st element on the periodic table
  2. 5. A type of atom with the same number of protons
  3. 7. Where most of our drinking water comes from
  4. 10. the center of an atom
  5. 11. when water defines gravity
  6. 14. the horizontal grouping on the periodic table
  7. 15. Who created the "Plum pudding" model of an atom
Down
  1. 1. An electron on the outer most shell
  2. 2. a non-reactive substance
  3. 3. the property that lets water stick to itself
  4. 6. water is called the ____________ because it can dissolve most things
  5. 8. a highly reactive non-metal
  6. 9. The neutrally charged molecule in the nucleus
  7. 12. what does the "P" in APE MAN stand for
  8. 13. Positive charged Ion