Across
- 3. most dangerous radation
- 5. protons+neutrons
- 6. element with different mass
- 8. the act of an atom emitting radiation
- 10. combining atoms
- 12. the self-sustaining fission reaction spread by neutrons
- 13. number of protons
- 14. the amount of time half of a sample goes through radiation
Down
- 1. splitting atoms
- 2. an electron is emitted
- 4. helium
- 7. atom with positive charge
- 9. central core of an atom
- 11. atom with neutral charge