Across
- 1. Has mass and takes up space
- 3. decay emits an electron
- 9. neutral subatomic particle
- 10. Scientist who discovered the proton and electron
- 12. Scientist who came up with first orbital model of atom
- 13. negative subatomic particle
- 16. positive subatomic particle
Down
- 2. Decay emits a helium atom
- 4. capture captures an electron
- 5. radiation emits STRONG energy only
- 6. Scientist who discovered the nucleus
- 7. Came up with the idea of the atom
- 8. Makes up all things
- 11. Came up with first atomic theory
- 14. Scientist who discovered the neutron
- 15. plus decay emits a positron