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Dr. H Nuclear

Dr. Heiny: (Standard 11) Nuclear Chemistry

QuestionAnswer
nuclear fission the separating of the nucleus of an atom into smaller pieces
nuclear fusion the combining of atomic nuclei
alpha decay a type of radiation that forms alpha particles
beta decay a type of radiation that forms beta particles
deuterium a stable isotope of the element hydrogen. An atom of deuterium consists of one proton, one neutron and one electron.
gamma decay A radioactive process in which an atomic nucleus loses energy
Geiger counter a type of particle detector that measures ionizing radiation
Half-life the period of time it takes for a substance undergoing decay to decrease by half.
Isotopes different types of atoms (nuclides) of the same chemical element, each having a different number of neutrons
mass number the total number of protons and neutrons
nucleon another name for the protons and neutrons.
Quark an elementary particle and a fundamental constituent of matter.
Radioactivity the process by which an unstable atomic nucleus spontaneously loses energy by emitting ionizing particles and radiation
Strong nuclear force a force holding the protons together in the nucleus; a short range but strong force
transmutation a change of one element into another
Tritium a radioactive isotope of hydrogen containing a mass of protons and neutrons equal to 3.
subatomic particles particles that are smaller than atoms
Created by: LPH
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