Nuclear Chemistry Review

4. A series of fission reactions in which neutrons released cause further reactions.
6. The energy required to hold the protons and neutrons together in the nucleus.
10. A particle consisting of two protons and two neutrons emitted from a nucleus.
11. An unstable isotope that undergoes radioactive decay.
13. The time it takes an isotope to decay to half of its original value.
14. The splitting of a heavy nucleus into smaller nuclei releasing large amounts of energy.
15. An instrument used to detect and measure radiation.

1. The original radioactive nucleus before decay.
2. A high-speed electron or positron emitted during nuclear decay.
3. Atoms of the same element with different numbers of neutrons.
5. High-energy electromagnetic radiation released from an excited nucleus.
7. The stable or unstable nucleus that remains after a radioactive decay.
8. The process where two light nuclei combine to form a heavier nucleus releasing energy.
9. The difference between the mass of a nucleus and the sum of the masses of its protons and neutrons.
12. The spontaneous emission of radiation from an unstable nucleus.