Unit 15: Radioactivity and Nuclear Chemistry Vocabulary

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Alpha Particle
a particle of nuclear radiation emitted from a decaying atomic nucleus
Beta Particle
a high-speed electron or positron emitted in the decay of a radioactive isotope
Bubble Chamber
an instrument that records the tracks of ionizing particles
Chain Reaction
a series of chemical reactions in which the product of one is a reactant in the next
Cloud Chamber
apparatus that detects high-energy particles passing through a supersaturated vapor
Gamma Ray
Gamma Ray
electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength
Half-Life
Length of time required for half of the radioactive atoms in a sample to decay
Nuclear Fission
nuclei of isotopes split apart when struck by neutrons
Nuclear Fusion
the action or process of combining two atomic nuclei to produce a nucleus of greater mass
Nuclide
an atom characterized by a definite atomic number and mass number
PET (Position Emission Tomography)
An imaging technique that relies on the detection of radioactive sugar consumed by active brain cells
Radioactivity
the spontaneous emission of radiation by an unstable atomic nucleus
Tracer
(radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes
Transmutation
the conversion of an atom of one element to an atom of another element
Categories: Nuclear Chemistry