chapter 12

chemistry
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which of the following has in a nonuniform arrangement
a. homogenous mixture
b. solution
c. salt water
d. heterogenous mixture
d. heterogenous mixture
a heterogenous mixture always contains
a. only one substance
b. more tan two substances
c. two or more substances that are visible distinguishable
d. two or more substances that are not visibly distinguishable
c. two or more substances that are visible distinguishable
which of the following is a heterogenous mixture?
a. water
b. a sugar water solution
c. whole wheat bread
d. sugar
c. whole wheat bread
which of the following is a homogenous mixture
a. water
b. a sugar water solution
c. whole wheat bread
d. sugar
b. a sugar water solution
which of the following is a homogeneous mixture of substances in a single phase
a. a solution
b. a colloid
c. a compound
d. a suspension
a. a solution
all of the following are homogeneous mixtures except
a. soil
b. a sugar water solution
c. gasoline
d. a salt water solution
a. soil
which of the following is not an example of a colloid
a. paint
b. smoke
c. butter
d. sugar water
d. sugar water
which mixture is made up of the smallest particles
a. milk
b. salt water
c. shaving cream
d. muddy water
b. salt water
which mixtures contains visible particles that settle out unless the mixture is stirred
a. a colloid
b. a homogeneous mixture
c. a solution
d. a suspension
d. a suspension
which mixture contains visible particles that are in a dispersed phase and do not settle out
a. a colloid
b. a homogeneous
c. a solution
d. a suspension
a. a colloid
a metal solution is a (n)
a. colloid
b. alloy
c. suspension
d. emulsion
b. alloy
colloids
a. can be separated by filtering
b. settled out when allowed to stand
c. scatter light
d. contains particles larger than 1000m
c. scatter light
a substance whose water solution is a good conductor of electricity is a (n)
a. nonelectrolyte
b. electrolyte
c. nonpolar substance
d/ solute
b. electrolyte
which of the following is an electrolyte
a. sodium chloride
b. sugar
c. pure water
d. glass
a. sodium chloride
a substance whose water solution is a poor conductor of electricity is a (n)
a. polar substance
b. non electrolyte
c. electrolyte
d. ionic substance
b. non electrolyte
which of the following is a molecular substance whose aqueous solution carries an electric current
a. liquid hydrogen
b. hydrogen chloride
c. sugar
d. iron
b. hydrogen chloride
which of the following is a nonelectrolyte
a. sodium chloride
b. hydrogen chloride
c. sugar
d. potassium chloride
c. sugar
increasing the surface area of the solute
a. increases the rate of dissolution
b. decreases the rate of dissolution
c. has no effect on the rate of dissolution
d. can increase decrease or have no effect on the rate of dissolution
a. increases the rate of dissolution
which of the following will dissolve most rapidly
a. sugar cubes in cold water
b. sugar cubes in hot water
c. powdered sugar in cold water
d. powdered sugar in hot water
d. powdered sugar in hot water
which of the following is an example of a polar solvent
a. carbon tetrachloride
b. benzene
c. water
d. gasoline
c. water
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