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30 Cards in this Set
- Front
- Back
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alpha decay |
where an alpha particle is emitted from a nucleus |
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alpha particle |
4/2 a, 4/2 He has same combination of particles as the nucleus of a Helium atom |
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beta decay |
where a neutron changes into a proton |
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beta particle |
0/-1 B , 0/-1 e a high speed electron; emitted by a radioactive nucleus in beta decay |
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chain reaction |
a process in which one fission reaction sets off the next |
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daughter isotope |
the stable product of radioactive decay |
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decay curve |
curved line on a graph that shows the decay rate of radioisotopes |
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fission |
a large nucleus breaks apart, producing nuclei and energy |
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fusion |
two low mass nuclei join together to make a big one |
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gamma decay |
isotope falls from a high-low energy state, giving off a high-energy gamma ray |
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gamma radiation |
0/0 y rays of high-energy, short wavelength radiation |
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half-life |
the time it takes for 1/2 the nuclei to decay |
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isotopes |
dif. atoms of a particular element that have: -same # of protons -dif. # of neutrons |
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mass number |
total # of protons & neutrons found in the nucleus of an atom |
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natural background radiation |
the stream of particles or waves that is found in the environment |
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nuclear equation |
symbols that idicates changes in the nuclei during a nuclear reaction |
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nuclear reaction |
where an atoms nucleus changes by gaining/releasing particles/energy |
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nuclear symbol |
atomic symbol for an isotope (chem. symbol, atomic # and mass #) |
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parent isotope |
the isotope that undergoes radioactive decay |
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radiation |
high-energy rays & particles emitted by radioactive sources |
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radioactive decay |
nuclei of radioactive parent isotopes emit A, B, G radiation --> decay products |
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radioactivity |
release of high-energy particles & energy as a result of changes--> nuclei |
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radiocarbon dating |
determining age of objects by measuring the amount of carbon-14 left |
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radioisotopes |
isotopes that are capable of radioactive decay |
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-define isotope and give an example written in standard atomic notation |
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-describe how each of the three types of radioactive decay change the nucleus of an atom |
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identify the symbols for each of the subatomic particles |
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explain half-life with reference to rates of radioactive decay |
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compare nuclear fission and nuclear fusion |
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classify examples of fission reactions and fusion reactions |
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