Across
- 4. A chemical reaction or other process in which the products themselves promote or spread the reaction, which under certain conditions may accelerate dramatically
- 9. The total number of protons and neutrons in the nucleus
- 10. Positive charge
- 12. The time taken for the radioactivity of a specified isotope to fall to half its original value.
- 13. A neutron turns into a proton and an electron is emitted
- 14. Neutral charge
Down
- 1. The number of protons
- 2. An Alpha released and the element charges
- 3. No charge particles released- only high gamma rays are released
- 5. Occurs when two smaller nuclei collide with a large amount of energy to form a single large nucleus
- 6. Occurs when a large nucleus is impacted by a neutron and splits the nucleus into two or more smaller nuclei
- 7. Same electron and protons but different neutrons
- 8. The emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
- 11. The brain of a cell