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Physical Science Review 7.2
Test Description: Concentration and Solubility
Instructions: Answer all questions to get your test result.
1) Solubility is
A
the amount of solute that will dissolve in a given amount of solvent at any temperature
B
the amount of solvent that will dissolve a given amount of a solute at a certain temperature
C
the amount of solvent that will dissolve a given amount of a solute at any temperature
D
the amount of solute that will dissolve in a given amount of solvent at a certain temperature
2) Which of the following sugar solutions is most concentrated?
A
15 g sugar dissolved in 25 g of solution
B
25 g sugar dissolved in 60 g of solution
C
12 g sugar dissolved in 30 g of solution
D
2 g sugar dissolved in 100 g of solution
3) Which of the following sugar solutions is most dilute?
A
25 g sugar dissolved in 60 g of solution
B
2 g sugar dissolved in 100 g of solution
C
15 g sugar dissolved in 25 g of solution
D
12 g sugar dissolved in 30 g of solution
4) KCl is added to water until no more can be dissolved at that temperature. Some solid remains at the bottom of the beaker. How would you describe the solution?
A
saturated
B
supersaturated
C
heterogeneous
D
unsaturated
5) Which combination of solid and liquid would likely form a solution?
A
Polar solid and non-polar liquid
B
Non-polar solid and polar liquid
C
Ionic solid and polar liquid
D
Ionic solid and non-polar liquid
6) Which compound is the most soluble in 100 g of water at 0 degrees Celsius?
A
Aluminum Sulfate: solubility 31.2 g
B
Cesium Nitrate: solubility 9.33 g
C
Barium Hydroxide: solubility 1.67 g
D
Lead Chloride: solubility 0.67 g
7) Which of the following will increase gas solubility?
A
increased volume
B
increased pressure
C
decreased solvent
D
decreased temperature
8) When cooks heat up a saturated solution and then let it cool they are left with a
A
supersaturated solution
B
unsaturated solution
C
saturated solution
D
dilute solution
9) Which 2 factors will decrease solubility?
A
decreased temperature and increased solute
B
increased temperature and decreased solute
C
increased temperature and increased solute
D
decreased temperature and decreased solute
10) In which the following cases is pressure a factor in the solubility of the solute in the solvent?
A
carbon dioxide is dissolved in water
B
sugar is dissolved in water
C
alcohol is dissolved in water
D
salt is dissolved in water
*select an answer for all questions
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