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11 Cards in this Set
- Front
- Back
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activity |
(A) expresses the number of atoms decaying in unit time |
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alpha particle |
most massive particle emitted by radioactive nuclei highest ionizing power He nucleus is given off |
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beta particles |
smaller and lighter than alpha particles
beta converts a neutron to a proton |
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binding energy |
Keeps protons together and sacrifices mass |
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curies |
(Ci) 3.700x 10^10 atoms/second |
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fission |
the splitting of a heavy nucleus by a neutron into two lighter nuclei releases energy |
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fusion |
a reaction between small atomic nuclei to form a larger one
releases energy |
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gamma radiation |
high-energy photons (like light); doesn't change mass number or atomic number |
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K-electron capture |
an electron in the innermost energy level (n=1) "falls" into the nucleus |
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nuclear equations |
show how the structure of an atomic nucleus is altered |
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positron |
identical to an electron except that its charge is +1 |
