Shelby

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Across
  1. 3. a negatively charged ion
  2. 5. a positive charged ion
  3. 8. a charged particle emitted from the nucleus
  4. 11. pattern of lines when light passes
  5. 13. the distance between the waves shapes repeats
  6. 16. two protons and two neutrons together
  7. 19. number of waves that have passed
  8. 20. waves in the electromagnetic field
  9. 21. energy explained by the quantum theory
  10. 22. where electrons are located around an atom
Down
  1. 1. valence shell electrons in a molecule
  2. 2. an unstable nucleus
  3. 4. energy that travels at a high speed
  4. 6. small amount of anything physical
  5. 7. where the electron is located
  6. 9. sum of mass numbers to mass products
  7. 10. rule how main group elements bond
  8. 12. net electric charged molecule
  9. 14. lowest energy
  10. 15. electromagnetic radiation
  11. 17. An elementary particle
  12. 18. in the outer shell of an atom