Chemistry

2. Nucleus changes from a higher energy state to a lower energy state, emits photos (energy)
4. Bomb made using plutonium
8. Two light nuclei combine together to release energy
11. Scientist who created the world’s first atomic bomb
13. Unstable nucleus changes into another element by shooting out a particle composed of 2 protons and 2 neutrons
14. Neutron decays into a proton, nucleus emits a beta particle
17. charged atoms that form when an atom loses or gains electrons
18. Any chemical element that lie beyond uranium in the periodic table
20. Releases energy in the form of ionizing radiation
21. Atoms with the same number of protons but different numbers of neutrons
22. number of protons on periodic table

1. City in Japan where Fat Man was dropped
3. Amount of time it takes for one-half of the radioactive isotope to decay
5. Splitting of a nucleus into two lighter nuclei
6. Bomb made using uranium
7. Series of chemical reactions where the products of a reaction contribute to the reactants of another reaction
9. Scientist who discovered radium and polonium
10. Smallest particle of an element that retains the properties of that element
12. City in Japan where Little Boy was dropped
15. Emission of ionizing radiation from nuclear decay
16. number of how much an element weighs
19. Energy that comes from a source and travels through space at the speed of light