Across
- 1. Discovered the Neutron
- 3. Home of the protons and neutrons
- 4. Discovered the Proton
- 5. Stated electrons were in energy levels
- 6. Positively charged Ion
- 10. One of the early scientist to come up with the term atomos
- 11. Atoms with a net charge other than 0
- 12. Positively charge ion
- 13. One of the first scientists to come up with a theory based on atoms
- 14. Discovered the electron
- 15. Approximately the same size as the proton
Down
- 2. Attraction between opposite charges
- 7. Atoms of the same element that have different masses
- 8. located outside the nucleus
- 9. Atom with more electrons than protons