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Ch 4 Chem

Ch 4 Atoms & Bonding

TermDefinition
valence electron the electrons that are in the highest energy level of an atom and that are involved in chemical bonding
electron dot diagram a representation of the valence electrons in an atom, using dots
chemical bond the force of attraction that holds 2 atoms together
ion an atom or group of atoms that has become electrically charged
polyatomic ion an ion that is made of more than one atom
ionic bond the attraction between oppositely charged ions
ionic compound a compound that contains positive and negative ions
chemical formula symbols that show the elements in a compound and the ratio of elements
subscript a number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
crystal a solid in which the atoms are arranged in a pattern that repeats again and again
covalent bond a chemical bond formed when 2 atom share electrons
molecule a neutral group of 2 or more atoms held together by covalent bonds
double bond a chemical bond formed when atoms share two pairs of electrons
triple bond a chemical bond formed when atoms share three pairs of electrons
molecular compound a compound that is composed of molecules
nonpolar bond a covalent bond in which electrons are shared equally
polar bond a covalent bond in which electrons are shared unequally
metallic bond an attraction between a positive metal ion and the electrons surrounding it
alloy a mixture of 2 or more elements, at least one of which is a metal
Created by: lrlong