Unit 4 crossword

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Across
  1. 3. electrons hang out in this space
  2. 10. atoms giving off waves
  3. 11. columns on the periodic table
  4. 13. elctrons are in their lowest possible energy states
  5. 14. a row on the periodic table
  6. 16. height of the wave from the origin
  7. 17. medium conductivity
  8. 18. electrons farthest from the shell
  9. 20. found in column 18
  10. 21. poor conductivity
Down
  1. 1. found in column 2
  2. 2. found in column 16
  3. 4. found in column 17
  4. 5. an electron absorbs energy to move to a higher energy level
  5. 6. in the middle of the periodic table
  6. 7. found in column 1
  7. 8. number of waves to pass a given point per unit of time
  8. 9. distance from crest to crest
  9. 12. found in column 15
  10. 15. High conductivity
  11. 19. highest point on one wave