Across
- 2. Center of an atom
- 6. the amount of time it takes for one-half of the radioactive isotope to decay
- 7. the emission of ionizing radiation
- 9. Subatomic particle with neutral charge
- 10. second most dangerous radiation particle
- 11. the total number of protons and neutron
- 12. the number of protons in the nucleus of an atom
- 14. positively charged subatomic particle
Down
- 1. a nuclear reaction in which a heavy nucleus splits
- 3. a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy.
- 4. least dangerous radiation particle
- 5. most dangerous form of radiation
- 8. a series of events so related to each other that each one initiates the next
- 13. Atoms with the same number of protons but different numbers of neutrons