Across
- 1. orbitals/pathways around the nucleus
- 2. Discovered Po and Ra
- 5. proposed that matter was made up of small particles
- 7. all matter is composed of atoms,law of constant composition
- 8. Raisin bun model
- 9. Law of Octaves
- 10. photoelectric effect
- 12. suggested a relationship between electricity and matter is neutral
- 13. discovered the mass of an electron
- 14. discovered neutron
Down
- 1. Discovered radioactivity
- 3. wroked with discharge tubes and discovered the cathode rays
- 4. Discovered protons
- 6. discovered alpha, beta and gamma
- 11. suggested that light may be made up of small bundles of energy called photons
- 13. Modern periodic table