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17 Cards in this Set
- Front
- Back
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covalent bond
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a chemical bond that results from sharing valence electron
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molecule
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is formed when two or more atoms bond covalently
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Lewis structure
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a model that uses electron-dot structures to show how electrons are arranged in molecules. Pairs of dots or lines represent bonding pairs.
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pi bond
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represented by the greek letter pi, forms when parallel orbitals overlap and share electrons
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endothermic reaction
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occurs when a greater amount of energy is required to break the existing bonds in the reactants than is released when the new bonds form in the products
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exothermic reaction
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occurs when more energy is released during product and formation than is required to break bonds in the reactants
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oxyacid
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an acid that contains both a hydrogen atom and an oxyanion
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structural formula
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uses letter symbols and bonds to show relative positions of atoms
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resonance
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is a condition that occurs when more than one valid Lewis structure can be written for a molecule or ion
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coordinate covalent bond
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forms when one atom donates both the electrons to be shared with an atom or ion that needs two electrons to form a stable electron arrangement with lower potential energy
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VSEPR model
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this model is based on an arrangement that minimizes the repulsion of shared and unshared electron pairs around the central atom
balloon thing |
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hybridization
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a process in which atomic oribitals mix and form new, identical hybrid orbitals
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polar covalent bond
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a type of bond that forms when electrons are not shared equally
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In naming the compound PCl5, the prefix used with the second element is __________?
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penta
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In the reaction between BF3 and NH3, a ________ type of bond is formed?
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coordinate covalent bond
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The bent shape of a water molecule makes it _______?
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polar
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Which group on the periodic table generally has the highest electron affinity?
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Halogens
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