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18 Cards in this Set
- Front
- Back
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Molecules that are attracted to a charge because they have partial charges on them.
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Polar Molecules
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Molecules that are not attracted to a charge.
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Nonpolar Molecules
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The forces of attraction that occur between molecules.
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Intermolecular forces
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The intermolecular forces between polar molecules are _________________ than intermolecular forces between nonpolar molecules.
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Stronger
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The tendency of an atom to attract shared electrons in a bond.
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Electronegativity
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A polar molecule or a polar bond between atoms. A crossed arrow is used to show the direction .
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Dipole
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What direction does the arrow point in a dipole?
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It points in the direction of the more electronegative atom. (partial negative charge)
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In a polar bond there is an __________________ sharing of electrons.
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Unequal
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A difference in electronegativities less than 0.4 indicates what type of bond between atoms?
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Nonpolar
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A difference of electronegativity betweeen 0.5-1.7 indicates what type of bond between atoms?
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Polar
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A difference in electronegativity greater than 1.7 indicates what type of bond between atoms?
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Ionic
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Molecules that are asymmetrical in shape and composition are usually?
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Polar
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Do small polar molecules smell?
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Yes
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Do small nonpolar molecules smell?
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No
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What is the general rule of solubility?
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Like dissolves like. Polar dissolves polar etc.
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What sized molecules tend to have a smell whether they are polar or not?
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Medium-sized
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Why do large molecules typically not have a smell?
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Because they do not easily evaporate to enter the nose.
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What phase of matter must a substance be in to be able to smell it?
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Gas
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