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Chapter 9 Vocabulary
Chemistry Vocabulary
13
Chemistry
Not Applicable
02/08/2005

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Term
electronegativity
Definition
the tendency of an atomin a compound to attract lectrons
Term
polar covalent
Definition
a kind of bond in which there is unequal sharing of electrons
Term
covalent bond
Definition
any bond in which there is electron sharing
Term
molecule
Definition
the particle formed when two or more atoms bond covalently
Term
exothermic
Definition
reactions that occur when more energy is released forming new bonds than is required to break bonds in the initial reactants
Term
sigma bond
Definition
a kind of bond in which electrons are shared in an area centered between the two atoms
Term
pi bond
Definition
a kind of bond formed by overlap of parallel orbitals
Term
oxyacid
Definition
any acidic compound that contains oxygen
Term
structural formula
Definition
a model that shows how the atoms ar earranged in a molecule
Term
endothermic
Definition
reactions that occur when more energy is required to break existing bonds in reactants than is released when new nonds form in the product molecule
Term
resonance
Definition
a condition that occurs when one or more valid Lewis structure can be drawn for a molecule
Term
coordinate covalent bond
Definition
a kind of bond in which one of the atoms provides both electrons for sharing
Term
VSEPR model
Definition
a model used to determine molecular shape
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