Science

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Across
  1. 3. Positive charged particles found in every element
  2. 5. A bonding of 2 non-metals
  3. 9. A negatively charged particles that orbit around the outside of the nucleus
  4. 10. Atoms that hold a positive or negative charge
  5. 11. A bonding of a metal and non-metal
  6. 13. Group 18
  7. 14. Periods
  8. 15. Hydrogen+Oxygen
Down
  1. 1. A particle with no charge
  2. 2. Calcium and Fluorine's bond
  3. 4. Touches the staircase
  4. 6. 8 protons
  5. 7. Gold
  6. 8. Groups
  7. 12. A variation of an element with the same atomic number but a different mass number