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Cards In This Set
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Which of the following is the strongest form of interatomic attraction?
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A chemical bond.
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What is happening at the molecular level when a polar molecule like water interacts with a typical sodium ion?
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The water molecule aligns such that the oxygen interacts with the sodium.
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Which of the following describes an aqueous solution?
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A mixture of some compound dissolved in water.
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Which of the following would have the lowest melting point?
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CF4
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In a solution of 77% N and 23% O which is the solvent?
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Nitrogen
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What statement best describes a mole?
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It is a very large number chemists use to count atoms or molecules.
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How are interatomic forces and solubility related?
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Solubility depends on the solvent's ability to overcome the intermolecular forces in a solid.
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How is the solubility of a solid affected by temperature?
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Temp is UP, SOL is UP; TEMP is down, SOL is DOWN
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If you were to increase the pressure of a gas above a liquid, what happens?
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The gas is forced into solution and the SOL INCREASES.
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Soap or detergent
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\/\/\/\/\/O
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Which of the following statements best describes the usual properties of most compounds BESIDES WATER?
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The density of a material increases when it solidifies.
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Heat is absorbed when a substance
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EVAPORATES
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The formation of H bonds between water molecules
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RELEASES HEAT ENERGY
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Why does liquid water expand slightly at low temperatures?
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The molecular vibrations start to SLOW and the molecules move FARTHER apart due to directional H bonds.
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Why are drops of water shaped like spheres?
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Water molecules at the surface are pulled into the liquid, making it as small as possible.
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