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Definitions

Important

QuestionAnswer
Atomic Number # p+ in nucleus
Mass Number # p+ & # n0 = Atomic Number + # n0
Isotopes atoms of same element with different numbers of n0 in nuclei
Molecule aggregate of 2(+) atoms in definite arrangement held together by chemical forces
Diatomic Molecule contains only 2 atoms
Polyatomic Molecule contains >2 atoms
Law of Multiple Proportions Ex: CO = O/C = 1 Ex: CO2 = O/C = 2
Ion atom or group of atoms that have a net +/- charge
Cation Ion with + charge; if neutral atom loses 1(+) electrons, becomes cation [only metals]
Anion Ion with - charge; if neutral atom gains 1(+) electrons, becomes anion [only nonmetals]
Monatomic Ion contains only 1 atom
Polyatomic Ion contains >1 atom
Ionic Compounds combination of cations and anions; compound consisting a metal & nonmetal
Organic Chemistry Branch of Chemistry, deals with Carbon compounds
Created by: incamonubus
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