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learning guide 12

vocabulary for learning guide 12 dr.heiny

QuestionAnswer
Atomic mass the mass of an isotope of an element measured in units formerly based on the mass of one hydrogen atom taken as a unit or on 1/16 the mass of one oxygen atom, but after 1961 based on 1/12 the mass of the carbon-12 atom.
Atomic number the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus.
Electrons Also called negatron. Physics, Chemistry . an elementary particle that is a fundamental constituent of matter, having a negative charge of 1.602 × 10 −19 coulombs
Isotopes any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights.
Neutrons an elementary particle having no charge, mass slightly greater than that of a proton,
Protons a positively charged elementary particle that is a fundamental constituent of all atomic nuclei.
Quarks any of the hypothetical particles with spin 1/2, baryon number 1/3, and electric charge 1/3 or −2/3 that, together with their antiparticles, are believed to constitute all the elementary particles classed as baryons and m
Created by: DGAxHERNANDEZ