Periodic Table

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Across
  1. 2. Positive electric charge
  2. 4. No electric Charge; neutral
  3. 6. Model of Atomic structure
  4. 8. Formed the periodic table
  5. 9. Made by mixing other substances together
  6. 10. State of being reactive
  7. 11. Diagram that shows the bonding between atoms
  8. 12. Matter made up of 2 or more substances
  9. 16. Abbreviation of an element
  10. 18. Substance that dissolves
  11. 19. Result of elements losing or gaining electrons
  12. 20. Center of atom
Down
  1. 1. Substance that does the dissolving
  2. 3. Negative electric charge
  3. 5. Element that is not a metal
  4. 7. Outside part of atom
  5. 13. Number of protons and neutrons in atom
  6. 14. positve, negative, nuetral
  7. 15. unit of chemical element
  8. 17. Composed of 2 or more elements, mixture