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Chemistry Unit 12
Test Description: Review for Unit 12 test on solutions
Instructions: Answer all questions to get your test result.
1) Agitation prevents settling in a(n)
A
suspension
B
alloy
C
gaseous mixture
D
homogenous mixture
2) What type of solute-solvent combination is carbon dioxide in water?
A
liquid-gas
B
cannot be determined
C
gas-liquid
D
liquid-liquid
3) In a solution at equilibrium,
A
the rate of dissolution is less than the rate of crystallization.
B
the rate of dissolution and the rate of crystallization are equal.
C
no dissolution occurs.
D
the rate of dissolution is greater than the rate of cryllization.
4) A dissolved solute that does not form ions is
A
insoluble.
B
a nonelectrolyte
C
a strong electrolyte.
D
a weak electrolyte.
5) If the temperature stays the same, the solubility of gas liquids
A
does not depend on pressure.
B
cannot reach equilibrium.
C
increases with increasing pressure.
D
decreases with increasing pressure.
6) Which type of mixture contains the smallest particles?
A
emulsions
B
colloids
C
suspensions
D
solutions
7) Which does not affect the rate at which a solid dissolves?
A
the speed at which the solution is stirred
B
the vapor pressure of the solvent
C
the surface area of the solid
D
the temperature of the solvent
8) Under which conditions is more CO2 dissolved in a carbonated beverage?
A
in an unopened bottle in the refrigerator
B
in a glass at room temperature
C
in a glass with ice cubes
D
in a bottle that has been left uncapped in the refrigerator
9) Which of the following does not increase the rate at which a solid dissolves in water?
A
using large pieces of the solid
B
raising the temperature of the water
C
crushing the solid
D
stirring the solution
10) The rate at which a solid dissolves is
A
directly related to solubility.
B
inversely related to solubility.
C
related to the square of the solubility.
D
not related to solubility.
11) Increasing the surface area of the solute
A
decreases the rate of dissolution.
B
can increase, decrease, or have no effect on the rate of dissolution.
C
increases the rate of dissolution.
D
has no effect on the rate of dissolution.
12) Stirring increases the rate of dissolution because it
A
lowers the temperature.
B
raises the temperature.
C
brings fresh solvent into contact with the solute.
D
decreases the surface area of the solute.
*select an answer for all questions
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