Matching
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Match each item with the correct statement below. a. | solvation | e. | electrolyte | b. | weak electrolyte | f. | colloid | c. | aqueous
solution | g. | surfactant | d. | solvent | | | | |
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1.
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interferes with hydrogen bonding between water molecules
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2.
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dissolving medium
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3.
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homogeneous mixture of water and dissolved substances
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4.
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Solute ions or molecules are surrounded by solvent molecules.
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5.
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compound that will conduct current in the liquid state or in aqueous
solution
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6.
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compound that ionizes incompletely in aqueous solution
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7.
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mixture in which particle size averages between 1 nm and 1000 nm
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Match each item with the correct statement below. a. | dispersed
phase | e. | Tyndall
effect | b. | surface tension | f. | suspension | c. | Brownian
motion | g. | solute | d. | dispersion medium | h. | emulsion | | | | |
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8.
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inward force tending to minimize surface area of a liquid
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9.
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dissolved particle
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10.
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mixture in which particle size averages greater that 1000 nm in diameter
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11.
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Colloidal particles spread throughout a suspension.
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12.
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phenomenon observed when beam of light passes through a colloid
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13.
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chaotic movement of colloidal particles
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14.
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colloid of a liquid in a liquid
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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15.
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What
causes water's low vapor pressure? a. | dispersion forces | c. | hydrogen bonding | b. | covalent
bonding | d. | ionic
attractions | | | | |
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16.
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Which
of the following is primarily responsible for holding water molecules together in the liquid
state? a. | dispersion
forces | c. | ionic
bonds | b. | hydrogen bonds | d. | polar covalent bonds | | | | |
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17.
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Which
atom in a water molecule has the greatest electronegativity? a. | one of the
hydrogen atoms | b. | both hydrogen atoms | c. | the oxygen
atom | d. | There is no
difference in the electronegativities of the atoms in a water molecule. | | |
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18.
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What
is primarily responsible for the surface tension of water? a. | dispersion
forces | c. | ionic
attractions | b. | hydrogen bonding | d. | covalent bonding | | | | |
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19.
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Surface tension ____. a. | is the inward force which tends to minimize the surface area of
a liquid | b. | may be increased by detergents | c. | is decreased by
hydrogen bonding | d. | causes beads of water to spread out | | |
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20.
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The
fact that ice is less dense than water is related to the fact that ____. a. | the molecular
structure of ice is much less orderly than that of water | b. | the molecules of
ice are held to each other by covalent bonding | c. | ice has a
molecular structure in which water molecules are arranged randomly | d. | ice has a
molecular structure that is an open framework held together by hydrogen
bonds | | |
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21.
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What
is the term for the dissolving medium in a solution? a. | solvent | c. | solvator | b. | solute | d. | emulsifier | | | | |
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22.
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What
occurs in solvation? a. | Solute ions separate from solvent
molecules. | b. | Solvent molecules surround solute
ions. | c. | Solvent molecules bind covalently to solute
molecules. | d. | Ionic compounds are formed. | | |
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23.
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Which
of the following substances dissolves most readily in gasoline? a. | CH | c. | NH | b. | HCl | d. | NaBr | | | | |
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24.
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What
type of compound is always an electrolyte? a. | polar covalent | c. | ionic | b. | nonpolar
covalent | d. | network
solid | | | | |
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