Nuclear Energy

3. a nuclear reaction in which a heavy nucleus splits
5. a positively charged atom
9. the number of protons in the nucleus of an atom
10. the total number of protons and neutrons in a nucleus
11. a nuclear reaction in which two nuclei combine to form a single heavier one
13. two or more elements with the same atomic number but different atomic mass
14. the emission of ionizing radiation or particles

1. a particle with a helium nucleus
2. a chemical reaction process in which products promote the spread of the reaction
4. the central core of an atom consisting of protons and neutrons
6. an electromagnetic radiation emitted with an unstable nucleus
7. a particle with a fast moving electron emitted with radioactive decay
8. the time required for the atomic nuclei of a radioactive sample to decay
12. a subatomic particle without an electric charge