Evolution of the Atomic Model

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Across
  1. 3. name of rutherford's model
  2. 4. particle first featured in plum pudding model
  3. 7. description of the electron orbits in Rutherford's and Chadwick's models
  4. 10. number of subatomic particle types found in the atomic nucleus
  5. 12. defined the orbits of electrons
  6. 13. element used in Chadwick's research
  7. 14. light released by atoms as electrons transition between energy levels, subject of Bohr's research
  8. 19. name of dalton's model
  9. 20. cannot be separated into smaller parts
  10. 22. first to discover a subatomic particle
  11. 24. discovered the proton
  12. 25. discovered the neutron
Down
  1. 1. particle first featured in Chadwick's model
  2. 2. electrical state of a proton
  3. 3. particle first featured in planetary model
  4. 5. the subject of Thomson's research
  5. 6. dense structure found at the center of the atom
  6. 8. name given by democritus to the small particles that compose matter
  7. 9. first to use the term "atomos"
  8. 11. the subject of Dalton's research
  9. 15. electrical state of an electron
  10. 16. electrical state of a neutron
  11. 17. the father of atomic theory
  12. 18. name of thomson's model
  13. 21. the basis of Democritus's model
  14. 23. material used in Rutherford's research