Across
- 4. Name of the scientist who discovered the nucleus
- 6. Name for the negatively charged particles in an atom
- 7. Where can you find the mass of an atom
- 8. said the atom was a solid sphere
- 9. Ancient ________ were the first people to come up with the idea of the atom
- 12. British scientist who found negatively charged particles in the atom
- 14. "Uncuttable"
Down
- 1. Series of models
- 2. Name of JJ Thomson's atomic model
- 3. During Rutherford's experiment, a few particles were strongly __________
- 5. Name of the Greek scientist
- 10. Anything with mass and volume
- 11. Positively charged particles found in the nucleus
- 13. Size of an atom