Solubility — Quiz Answers

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1
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Oil and water placed in a jar will separate. Even when shaken and mixed, the oil still separates from the water. Which best describes oil and water?

A
Oil and water have a low solubility because they exert different pressures.
B
Oil and water are highly soluble because they have separate chemical properties.
C
Oil and water are highly soluble because they exert different pressures.
D
Oil and water have a low solubility because they have separate chemical properties.
2
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Maceo is making rock candy. Which best describes the steps she should take?

A
heat a saturated sugar water solution, dissolve more sugar, then let the solution cool
B
saturate a water solution, lower the pressure, and dissolve more sugar
C
saturate a water solution, increase the pressure, and dissolve more sugar
D
heat a saturated sugar water solution, dissolve more sugar, and wait until the water evaporates
4

Which most likely represents the process of dissolving carbon dioxide in soda?

A
decreased agitation to decrease solubility
B
increased temperature to increase solubility
C
decreased pressure to increase solubility
D
increased pressure to increase solubility
5

Fred has a large piece of sugar that is not dissolving in his drink. How could he get the sugar chunk to dissolve faster?

A
by placing it in the refrigerator
B
by adding a larger piece so the smaller one will dissolve
C
by breaking it up into smaller pieces
D
by letting it dissolve naturally without agitation
6

How does temperature affect the speed with which the solute dissolves?

A
A constant temperature increases the speed of solubility.
B
Higher temperature increases the speed of solubility.
C
Lower temperature increases the speed of solubility.
D
A variable temperature increases the speed of solubility.
9

A substance is boiled repeatedly and stirred, but the solute never mixes with the solvent. Which best describes why?

A
The solution was saturated.
B
The temperature was not high enough to mix the solute and solvent.
C
The pressure was increased.
D
The chemical properties of the solute and solvent are different.
10

Naomi has increased the pressure on a solution of liquid and gas in a closed container. What will this do to the gas in her solution?

A
increase the amount
B
increase the temperature
C
decrease the temperature
D
decrease the amount

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