periodic table

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Across
  1. 3. Negative charge
  2. 6. electrons Outermost energy levels
  3. 9. levels Fixed amount of energy
  4. 10. Atoms bond together
  5. 11. Basic unit of matter
  6. 12. Positive charge
  7. 14. Horizontal lines
  8. 16. Groups 1-13
Down
  1. 1. model Model created by neils bohr
  2. 2. Elements between metals and non metals
  3. 4. metals Groups 14-16
  4. 5. gases Group 18
  5. 7. Vertical lines
  6. 8. Neutral charge
  7. 13. Center of an atom
  8. 15. structured How the atom is structured