Review for Exam 2 4th edition

Review for Exam 2 4th edition - Review for Exam 2 Know the...

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Review for Exam 2 Know the following terms: alpha particle: a positively charge particle consisting of two protons and two neutrons, emitted in radioactive decay or nuclear fission; the nucleus of a helium atom. alpha decay: a radioactive process in which an alpha particle is emitted from the nucleus of an atom, decreasing its atomic number by two. beta particle: an electron or positron emitted from an atomic nucleus in a certain type of radioactive decay. gamma ray: a photon of penetrating electromagnetic radiation (gamma radiation) emitted from an atomic nucleus. beta decay: a radioactive process in which a beta particle is emitted from the nucleus of an atom, raising the atomic number of the atom by one if the particle is negatively charged, lowering it by one if positively charged. critical mass: the amount of a given fissionable material necessary to sustain a chain reaction at a constant rate; an amount necessary or sufficient to have a significant effect or to achieve a result. nuclear fission: fission the splitting of an atomic nucleus into approximately equal parts, either spontaneously or as a result of the impact of a particle usually with an associated release of energy. half-life: the time required for one half the atoms of a given amount of a radioactive substance to disintegrate proton: a positively charged elementary particle that is a fundamental constituent of all atomic nuclei. nuclear fusion: fusion a reaction in which two nuclei combine to form a nucleus with the release of energy. strong nuclear force: the short-range attractive force between baryons that holds together the nucleus of the atom. Neutron: an elementary particle having no charge, mass slightly greater than that of a proton atomic spectrum: the range of characteristic frequencies of electromagnetic radiation that are readily absorbed and emitted by an atom effective nuclear charge:
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This document was uploaded on 10/26/2011 for the course SPAN 1512 at South Plains College.

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Review for Exam 2 4th edition - Review for Exam 2 Know the...

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