Across
- 2. is the number of protons in the nucleus
- 5. 4/2 He
- 7. 4/3 Li 8/3 Li 9/3 Li
- 9. 0/-1 e
- 10. splitting of a nucleus to make new energy
- 12. also known as nuclear radiation
- 13. when two small nuclei become one nuclei
Down
- 1. high energy radiation, very dangerous
- 3. when decaying, energy is released
- 4. neutral particle
- 6. the time it takes for the material to decay
- 8. positively charged particle
- 11. protons + neutrons = ?