Physics Vocab Coach Mac

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Last updated 4:39 AM on 9/13/22
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23 Terms

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neutron
subatomic particle found in the nucleus with no charge
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gamma decay
radioactive decay in which energy is released by emission of photons
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positron
positively charged subatomic particle with the same mass of an electron
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nucleon
A proton or a neutron
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nuclear reactor
A structure that controls a nuclear reaction to obtain energy
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mass-energy equivalence
An equation that expresses that the mass of an object is a measure of its energy content
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beta decay
radioactive decay in which an electron or positron is emitted or absorbed
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proton
subatomic particle found in the nucleus with positive charge
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ionizing radiation
radiation with enough energy to remove electrons from the orbit of an atom
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half-life
the time taken for a radioactive isotope to decay to half its original mass
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excited state
absorbed energy cause an electron to move to a higher orbit
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isotopes
atoms of the same element that have different atomic masses
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Nuclear Stability
this is determined by the binding energy per nucleon
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nuclear fusion
a reaction in which light nuclei form a heavier nucleus, releasing energy
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binding energy
the energy that holds the nucleus together
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nuclear fission
a reaction in which a heavy nucleus splits, releasing energy
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electron
subatomic particle that orbits the nucleus with a negative charge
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alpha decay
radioactive decay in which a helium nucleus is ejected from the nucleus of an atom
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carbon dating
a process used to measure the age of dead organisms
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mass defect
the difference between the calculated mass of an isotope and its actual mass
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radioisotope
an isotope that is radioactive
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ground state
the lowest energy state of an atom
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photon
energy in the form of light

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