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Nuclear decay
Nuclear Decay, Fission, Fusion, Radiation
Question | Answer |
---|---|
chemical reactions | can be sped up, slowed down and can be affected by a catalyst |
nuclear reactions | cannot be sped up, slowed down and unaffected by a catalyst |
total percent for a percent comparison calculation | 100% |
heavy nucleus split into many lighter nuclei | nuclear fission |
ligher nuclei combine to for heavier nucleus | nuclear fusion |
the result of gamma rays | no change to atomic number or mass |
the result of alpha particles | atomic number + atomic mass changes |
the result of beta particles | atomic number changes |
used to find age of fossils | radiocarbon dating (isotope C-14) |
change in number of neutrons | isotope |
blocks alpha radiation | paper |
blocks beta radiation | wood |
blocks gamma radiation | partially concrete/lead |
time it takes for radioactive source to decrease by 50% | half-life |
anything that releases alpha or beta particles or gamma rays | radiation |
used to measure radiation levels | Geiger counter / film badge |
benefit of radiation | find and treat cancer |
negative of radiation | cause cancer or radiation sickness |
used to store nuclear "waste" radiation | underwater holding tanks |