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Chapter 9
Covalent Bonding
14
Chemistry
10th Grade
11/27/2007

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Term
covalent bond
Definition
results from sharing of valence electrons
Term
molecule
Definition
formed when two or more atoms bond covalently
Term
Lewis structure
Definition

uses electron dot structures to show electron arrangement in molecules

Term
Sigma bond
Definition
single covalent bonds
Term
Pi bond
Definition
added to a sigma bond in multiple covalent bonding
Term
endothermic
Definition
more energy is required to break the initial bonds than is released
Term
exothermic
Definition

more energy is released than is required to break the initial bonds

Term
oxyacid
Definition
contains hydrogen and an oxyanion
Term
structural formula
Definition
uses letter symbols and bonds to show relative positions of atoms
Term
resonance
Definition
occurs when more than one valid Lewis structure exists for a molecule
Term
coordinate covalent bond
Definition
a pair of electrons is donated to be shared with another atom
Term
VSEPR model
Definition

arrangement that minimizes electron repulsions

Term
hybridization
Definition
atomic orbitals are mixed to form new hybrid orbitals
Term
polar covalent
Definition
unequal sharing of electrons in a covalent bond
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