Across
- 2. Proposed that electrons orbit the nucleus
- 6. Neutral charged particle in nucleus
- 7. First said matter is made of tiny invisible atoms
- 8. Building block of matter
- 10. Negatively charged particle
Down
- 1. Center of atom
- 3. Discovered the nucleus
- 4. Positively charged particle
- 5. Discovered the electron
- 9. Created the first modern atomic theory