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Vocabulary from Chpt. 6 of Holt Modern Chemistry: Chemical Bonding

Chemical bond A mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together
Ionic bonding Chemical bonding that results from the electrical attraction between cations and anions
Covalent bonding Results from the sharing of electron pairs between two atoms
Nonpolar-covalent bond Covalent bond in which the bonding electrons are shared equally by the bonded atoms, resulting in a balanced distribution of electrical charge
Polar Atoms have an uneven distribution of charge
Polar-covalent bond A covalent bond in which the bonded atoms have an unequal attraction for the shared electrons
Molecule A neutral group of atoms that are held together by covalent bonds
Molecule compound A chemical compound whose simplest units are molecules
Chemical formula Includes the relative numbers of atoms of each kind in a chemical compound by using atomic symbols and numerical subscripts
Molecular formula Shows the types and numbers of atoms combined in a single molecule of a molecular compound
Bond energy The energy required to break a chemical bond and form neutral isolated atoms
Electron-dot notation An electron-configuration notation in which only the valence electrons of an atom of a particular element are shown, indicated by dots placed around the element's symbol
Lewis structures Formulas in which atomic symbols represent nuclei and inner-shell electrons, dot-pairs or dashes between two atomic symbols represent covalent bonds, and dots adjacent to only one atomic symbol represent unshared electrons
Structural formula Indicates kind, number, arrangement and bonds but not the unshared pairs of the atoms in a molecule
Single bond Covalent bond in which one pair of electrons is shared between two atoms
Multiple bonds Double and triple bonds; where atoms share more than one pair of electrons
Resonance Bonding in molecules or ions that cannot be correctly represented by a single Lewis structure
Ionic compound Composed of positive and negative ions that are combined so that the numbers of positive and negative charges are equal
Formula unit Simplest collection of atoms from which an ionic compound's formula can be established
Lattice energy Energy released when one mole of an ionic crystalline compound is formed from gaseous ions
Polyatomic ions A charged group of covalently bonded atoms
Metallic bonding The chemical bonding that results from the attraction between metal atoms and the surrounding sea of electrons
Malleability The ability of a substance to be hammered or beaten into thin sheets
Ductility The ability of a substance to be drawn, pulled, or extruded through a small opening to produce a wire
Created by: SavioScience



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