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Chapter 6
Vocab Terms and Statements
30
Chemistry
10th Grade
04/19/2012

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Term
Chemical Bond
Definition
mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together.
Term
Ionic Bonding
Definition
Chemical bonding that results from the electrical attraction between cations and anions.
Term
Covalent Bonding
Definition
results from the sharing of electron pairs between two atoms.
Term
Nonpolar-covalent Bond
Definition
a covalent bond in which the bonding electrons are shared equally by the bonded atoms, resulting in a balanced distribution of electrical charge.
Term
Polar
Definition
uneven distribution of charge.
Term
Polar-Covalent Bond
Definition
covalent bond in which the bonded atoms have an unequal attraction for the shared pairs.
Term
Molecule
Definition
neutral group of atoms that are held together by covalent bonds.
Term
Molecular Compound
Definition
A chemical compound whose simplest units are molecules.
Term
Chemical Formula
Definition
Indicated the relative numbers of atoms of each kind in a chemical compound by using atomic symbols and numerical subscripts.
Term
Molecular Formula
Definition
Shows the types and numbers of atoms combined in a single molecule of a molecular compound.
Term
Bond Energy
Definition
the energy required to break a chemical bond and form neutral isolated atoms.
Term
Electron-dot notation
Definition
is 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.
Term
Lewis Structure
Definition
formulas in which atomic symbols represent nuclei and inner-shell electrons, dot-pairs or dashes between two atomic symbols represent electron pairs in covalent bonds, and dots adjacent to only one atomic symbol represent unshared electrons.
Term
Structural Formula
Definition
indicated the kind, number, arrangement, and bonds but not the unshared pairs of the atoms in a molecule.
Term
Single Bond
Definition
Covalent bond in which one pair of electrons is shared between two atoms.
Term
Multiple Bond
Definition
Double and triple bonds are referred to as multiple bonds
Term
Resonance
Definition
refers to bonding in molecules or ions that cannot be correctly represented by a single Lewis structure.
Term
Ionic Compound
Definition
composed of positive and negative ions that are combined so that the number of positive and negative charges are equal.
Term
Formula Unit
Definition
the simplest collection of atoms from which an ionic compound's formula can be established.
Term
Lattice Energy
Definition
the energy released when one mole of an ionic crystalline compound is formed from gaseous ions.
Term
Polyatomic Ion
Definition
A charged group of covalently bonded atoms
Term
Metallic Bonding
Definition
The chemical bonding that results from the attraction between metal atoms and the surrounding sea of electrons
Term
Malleability
Definition
ability of a substance to be hammered or beaten into thin sheets
Term
Ductility
Definition
the ability of a substance to be drawn, pulled, or extruded through a small opening to produce a wire.
Term
VSEPR Theory
Definition
states that repulshion between the sets of valence-level electrons surround an atom causes these sets to be oriented as far apart as possible.
Term
Hybridization
Definition
The mixing of two or more atomic orbitals of similar energies on the same atom to produce new hybrid atomic orbitals of equal energies.
Term
Hybrid Orbitals
Definition
Orbitals of equal energy produced by the combination of two or more orbitals on the same atom.
Term
Dipole
Definition
Created by equal but opposite charges that are separated by a short distance.
Term
Hydrogen Bonding
Definition
The intermolecular force in which a hydrogen atom that is bonded to highly electronegative atom attracted to an unshared pair of electrons of an electronegative atom in nearby molecule
Term
London dispersion forces
Definition
The intermolecular attractions resulting from the constant motion of electrons and the creation of instantaneous dipoles.
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