Name: 
 

9.1 Quiz



Modified True/False
Indicate whether the statement is true or false.  If false, change the identified word or phrase to make the statement true.
 

 1. 

The component of a solution that is present in the greatest amount is called the solute. _________________________

 

 2. 

A molecule, like water, that has a charge separation is called a polar molecule. _________________________

 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 3. 

A mixture of two or more substances that is uniform at the molecular level is considered a(n):
a.
atom.
b.
compound.
c.
molecule.
d.
solution.
 

 4. 

Solubility is most often given as the number of grams of solute that will dissolve in:
a.
100 grams of solvent.
b.
1000 grams of solvent.
c.
1 milliliters of solvent.
d.
100 milliliter of solvent.
 

 5. 

The ratio of the amount of solvent to the amount of solution is the ____ of the solution.
a.
solubility
b.
saturation
c.
concentration
d.
solute
 

 6. 

A liquid known as the universal solvent is:
a.
sulfuric acid.
b.
water.
c.
sodium hydroxide.
d.
aqua regia.
 

 7. 

An example of a mixture that is NOT a solution is:
a.
salt and pepper in the same shaker.
b.
iron and carbon mixed to make steel.
c.
sugar, water, and flavoring in a drink.
d.
gold and silver as an 18-karat gold ring.
 

 8. 

Each of the following is an example of a solution EXCEPT:
a.
grape soda.
b.
steel.
c.
14 karat gold.
d.
mercury.
 

 9. 

Orange soda is a solution. The solvent in a glass of orange soda would be the:
a.
flavoring.
b.
water.
c.
color.
d.
carbon dioxide gas.
 

 10. 

If large amounts of hot water are released from a power plant into a lake:
a.
the amount of dissolved oxygen in that part of the lake increases.
b.
the amount of dissolved oxygen in that part of the lake decreases.
c.
the fish in the lake would be unaffected as long as the water is clean.
d.
the warm water would decrease the need for oxygen in fish.
 

 11. 

All carbonated beverages are solutions. All of the following are solutes in the beverage EXCEPT:
a.
flavoring.
b.
coloring.
c.
water.
d.
sugar.
 

 12. 

Solutes would tend to dissolve quickly for all of the following reasons EXCEPT:
a.
The temperature of the solvent is decreased.
b.
The size of the solute particles is decreased.
c.
The solute and solvent are shaken vigorously.
d.
The solute is extremely soluble in the solvent.
 

 13. 

If 40 grams of solvent is dissolved to make 100 grams of solution, what is the concentration of the solution?
a.
29%
b.
40%
c.
60%
d.
71%
 

 14. 

The amount of solute necessary to make 400 grams of a 12% solution is:
a.
48 grams
b.
352 grams
c.
388 grams
d.
412 grams
 

 15. 

When a solution reaches equilibrium:
a.
it contains less solute than it will dissolve at a given temperature.
b.
it contains more solute than it will normally dissolve at a given temperature.
c.
solute is going into solution faster than it is coming out of solution.
d.
solute is going into solution as fast as it is coming out of solution.
 

 16. 

To cause the greatest increase in the solubility of a gas in a liquid a scientist would:
a.
increase the temperature of the solution and decrease the pressure on the solution.
b.
decrease the temperature of the solution and increase the pressure on the solution.
c.
increase both the temperature of the solution and the pressure on the solution.
d.
decrease both the temperature of the solution and the pressure on the solution.
 

 17. 

The solubility of sugar at 25ºC is 200 g per 100 mL of water. The amount of sugar that would dissolve in 5.0 mL of water at 25ºC is:
a.
1.0 grams
b.
2.5 grams
c.
10 grams
d.
100 grams
 

 18. 

If 60 grams of solute is dissolved in 140 grams of solvent, the concentration of the solution is:
a.
30%
b.
43%
c.
75%
d.
80%
 

Completion
Complete each statement.
 
 
Select the correct term to complete each sentence. There are extra terms in the list.

supersaturatedsaturatedinsoluble
solublesolubilitydissolved
 

 19. 

When solute particles are evenly distributed throughout the solvent, the solute is described as being ____________________.
 

 

 20. 

The amount of solute that will dissolve in a certain volume of solvent is known as ____________________.
 

 

 21. 

If a solute will not dissolve in a particular solvent, for that solvent the solute is considered ____________________.
 

 

 22. 

At 25ºC, 40 grams of table salt is added to 100 mL of water in a test tube. After the solution has been shaken, some of the salt remains on the bottom of the test tube and will not dissolve because the solution is ____________________.
 

 

 23. 

When a solvent contains more dissolved solute than it will hold under normal conditions, the solution is considered to be _________________________.
 

 

Short Answer
 

 24. 

State two ways to increase the solubility of a gas in a liquid.
 

 25. 

Why is water a good solvent?
 

 26. 

Iron and carbon are mixed together to form the alloy known as steel. In this solution, which material is the solvent?
 

 27. 

List two ways to increase the rate at which a solid solute will dissolve in a solvent.
 

 28. 

Why is water called the universal solvent?
 

 29. 

Define equilibrium in the solution process. At what point in the solution process does equilibrium occur?
 

Problem
 

 30. 

The solubility of table salt at 25ºC is 37.7 grams per 100 mL of water. How much table salt can be dissolved in 250 mL of water at 25ºC?
 

 31. 

How many grams of sugar would you need to add to water to make 250 grams of a 9% solution?
 

 32. 

At 25ºC, 47.0 grams of solute A is dissolved in 79.0 mL of water. What is the solubility of substance A in water at this temperature?
 

 33. 

How much water at 25ºC would be needed to dissolve 50 grams of baking soda? The solubility of baking soda in water at 25ºC is approximately 10 grams per 100 mL.
 

Essay
 

 34. 

Why does grinding a solute into small particles increase the rate at which the solute dissolves?
 

 35. 

Explain how large crystals of sugar might be formed in a container.
 

 36. 

On warm summer days fish can be seen coming to the surface of shallow ponds to “gulp” air while other fish, on the same days, go to the bottom of deep lakes. Explain the behavior of the fish based upon gas solubility.
 



 
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