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30 Cards in this Set
- Front
- Back
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chemical bond
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force that holds two atoms together
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positively charged ion
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cation
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negatively chared ion
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anion
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the electrostatic force that holds oppositely charged particles together in an ionic compound
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ionic bond
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cpounds that contain ionic bonds
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ionic compounds
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ionic compounds whose aqueous solution conducts an electric current
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electrolyte
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energy required to separate one mole of the ions of an ionic compound
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lattice energy
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one atom ion such as MG plus 2 or Br
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monatomic ion
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charge of a monatomic ion
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oxidation number
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ions made up of more than 1 atom
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polyatomic ion
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proposes that all the metal atoms in a metallic solid contribute their valence elctrons to form a "sea of electrons
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electron sea model
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electrons present in the outer energy levels of bonding metallic atoms-are free to move
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delocalized electrons
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attraction of a metallic cation for delocalized electrons
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metallic bond
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mixture of elements that has metallic properties
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alloy
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the chemical bond hat results from the sharin gof valence electrons
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covalent bond
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formed when two or more atoms bond covalently
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molecule
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use electron dot diagrams to show how electrons are arrangedi ncolecules
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Lewis structure
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single covalent bonds
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sigma bonds
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formed when parallel orbitals overlap to share electrons
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pi bond
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occur when a agreater amount of energy is required to break the existing bonds in the reactants than is released whe the new bonds form in the product molecules
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endothermic reaction
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occur when more energu is released forming new bonds than is required to break bonds in the initial reactants
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exothermic
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any acid that contains hydrogen and an oxyanion
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oxyacid
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uses letter symbols and bonds to show relative position of atoms.
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structural formula
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condition that occurs when mroe than one valid Lewis structure can be written for a molecule or ion
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resonance
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when an atom donates a pair of electrons to be shared with an atom or ion that needs two electrons to become stable
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coordinate covalent bonds
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model used to determine the molecular shape
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VSCPR model
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a process by which atomic orbitals are mixed to form new, identical hybrid orbitals
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hybridization
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results in unequal sharing
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polar covalent
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simplest ration of the ions represented in an ionic compound
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formula unit
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oxyanion
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polyatomic ion composed of an element usually a nonmetal bonded to one or more oxygen atoms
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