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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Becquerels |
The number of counts from a radioactive source in one second |
Count rate |
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Half life |
Time taken for the number of undecayed atoms to reduce by half |
Not the game |
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Composition and function of alpha particles |
2 protons, 2 neutrons, can be blocked by thick paper, helps stabilize atom as it strengthens the strong nuclear force Most ionizing, occurs in heavy elements Heavy |
Boy girl auditorium analogy |
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Composition, reach and function of beta particles |
Fast-moving electron, neutron in nucleus decays to proton and an electron is released Blocked by metal Penetrating but Not very ionizing |
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Composition, reach and function of: Gamma rays |
Electromagnetic wave with a short wavelength Never stopped, slowed down by thick lead Extra energy from nucleus |
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Definition of radioactive decay |
Radioactive decay is the random, spontaneous release of ionizing radiation from the nucleus of an unstable atom. |
Verbose. |
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Action of radioactive particles in a current |
Alpha: toward -, right Beta: Toward +, left Gamma: straight |
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Action of radioactive particles in a magnetic field |
Alpha: Away from North, deflects Beta: Towards North, deflects even more Gamma: Straight ahead |
LEFT HAND MOTOR RULE |
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When does a nucleus undergo radioactive decay? |
When the forces are unbalanced (isotope) |
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How do you write out an element/isotope? |
Nucleon Number (P+N) on top, Atomic Number (P) below |
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