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Unit 4 Vocabulary Practice

These are the terms needed to pass the vocabulary exam for Unit 4 on Chemical Bonding

AB
Covalent Bondingwhen two atoms share pairs of electrons
Polarcreated when bonding atoms have an unequal electron sharing distribution
Ionic Bondinga bond between a Cation and an Anion
Polyatomic iona charged group of covalently bonded atoms
Metallic Bondingbonding between metal atoms and the "sea" of electrons surrounding their nuclei
Chemical Formulashows the number of atoms bonded together and their quantities by using symbols and subscripts
Intermolecular Forcesforces that exist "between" molecules that determine characteristics like, boiling point or their state at specific temperatures
Saltan ionic compound composed of a cation and the anion from an acid
Oxidation Numbernumber assigned to an atom in a "molecular" compound that indicated the basic distribution of electrons among the bonded atoms
Formula Masssum of the average atomic masses of all the atoms represented in a chemical formula
Percent Compositionpercentage by mass of each element in a compound
Empirical Formulabase chemical formula of a compound with subscripts showing the lowest whole number mole ratio of the different atoms
Ionic Compoundcombination of positive & negative ions in an unequal sharing of of electrons but creates a neutral compond
Binary Compoundscompounds composed of two different elements
Nomenclaturea system used to name chemical compounds and molecules
Ductilitya characteristic of a metal that can be used to make wire to conduct electricity
Moleculea covalently bonded group of atoms
Nonpolar-Covalent Bondequal sharing of the electrons in a covalent bond
Chemical Bonda mutally electrical attraction between the positve nucleuses of two or more atoms and the valence electrons of each
Lewis Structurea technique used to determine the organization of valence electrons to help determine the molecular geometry of a molecule or compound


Chemistry Instructor
Evergreen High School
Vancouver, WA

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