Crossword Puzzle Activity Chemistry

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Across
  1. 6. negatively charged ion
  2. 7. atoms prefer eight electrons in the valence shell
  3. 9. has a negative/positive charge that results in the atom having a negative/positive charge
  4. 10. charged ion particle
  5. 11. emitting radiation
Down
  1. 1. travels through empty space at lightspeed
  2. 2. Smallest unit of light
  3. 3. particles containing electromagnetic radiation
  4. 4. Distance from one trough to another trough
  5. 5. # of waves that pass per second
  6. 8. when an electron is on the lowest level