Atomic Theory
Across
- 2. Came up with the planetary model of the atom
- 4. This negatively charged particle was discovered with the cathode ray tube experiment
- 7. Came up with the original idea of an atom
- 9. Came up with the Atomic Theory
- 11. Rutherford performed this experiment
- 12. the subatomic particle without a charge and has a relative mass of a proton.
- 14. Came up with the electron cloud model of the atom
- 15. the simplest type of matter
- 16. This positively charged particle is found in the nucleus
Down
- 1. Electrons exist in these around the nucleus.
- 3. This is the most recent atomic model
- 5. Discovered the nucleus
- 6. Discovered the electron
- 8. JJ Thomson came up with this atomic model
- 10. discovered little packets of energy called photons
- 13. Heisenberg came up with this principle