Atomic Theory

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Across
  1. 2. Electron charge
  2. 4. Atoms of the same element are exactly alike. Atoms of different elements are different.
  3. 7. Neutron charge
  4. 14. How many electrons are in the sixth orbit?
  5. 15. Proton charge
  6. 16. How many electrons are in the first orbit?
  7. 18. Discovered electrons can jump from one energy level to another.
  8. 19. Discovered the existence of neutrons.
  9. 20. How many electrons are in the fourth orbit?
Down
  1. 1. Protons = ________
  2. 3. Atomic Mass - Atomic Number = Number of _____
  3. 5. What did Bhors model look like?
  4. 6. What did Thomsons model look like?
  5. 8. Proposed the Law of Conservation of Matter
  6. 9. Said the exact location of an electron cannot be found.
  7. 10. Gold foil experiment
  8. 11. The atomic number is equal to the amount of _______.
  9. 12. Discovered that atoms can be split into smaller particles.
  10. 13. How many electrons are in the second orbit?
  11. 17. Where the protons and neutrons are located in an atom?