Across
- 4. this radiation occurs when the nucleus becomes unstable
- 5. making smaller atoms into bigger atoms
- 8. the sum of protons and neutrons
- 11. emitting radiation in the form of alpha, beta and gamma rays
- 12. neutral charge of a nucleus
- 13. process of splitting a larger atom into a smaller atom
Down
- 1. a photon emitted spontaneously
- 2. the number of protons in the nucleus
- 3. time that it takes to decay half on an atom
- 6. emitting radiation
- 7. same number of protons and electrons but a different number of neutrons
- 9. this radiation releases when the atom has too many neutrons
- 10. positive charge of a nucleus