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Concentration and Solubility

Total questions: 53

Worksheet time: 4hrs 46mins

Name
Class
Date
1.
When a solution is very concentrated, it has a high amount of _________ to _________.
a)
solute to solvent
b)
solvent to solute
c)
solvent to solution
d)
solution to solute
2.
When layering liquids, which liquid will sink to the bottom?
a)
The most dense
b)
The least dense
c)
The least concentrated
3.
The more concentrated solution is 
a)
lighter
b)
heavier
c)
more colorful
4.
You can make a solution more concentrated by adding __________.
a)
solute
b)
solvent
c)
water
5.
How does a solution become supersaturated?
a)
dissolve lots of solute in it.
b)
dissolve a little solute in it. 
c)
dissolve more solute than you should be able to. 
d)
dissolve a super amount of solvent in it. 
6.
Solution where more solute can still be dissolved at the given temperature. 
a)
Saturated
b)
Unsaturated
c)
Supersaturated
d)
Homogeneous solution
7.
The ___ is the thing being dissolved.
a)
solute
b)
solvent
c)
mixture
d)
suspension
8.
Describe a solute.
a)
part of solution present in largest amount
b)
gets dissolved
c)
water
d)
surrounds and breaks apart
9.
The maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.
a)
solubility
b)
concentrated
c)
diluted
d)
surface area
10.
mixture of two or more substances; dissolved particles are spread evenly throughout the mixture
a)
solvent
b)
solute
c)
mixture
d)
solution
11.

When a solvent contains as much of a solute as it can hold, it is described as being

a)

saturated

b)

unsaturated

c)

supersaturated

d)

miscible

12.

What do you call a solution where more solute can still be dissolved at the given temperature?

a)

saturated

b)

unsaturated

c)

supersaturated

d)

miscible

13.

When making sweet tea, sugar is the (1) and the tea is the (2).

a)

1-solute, 2-solvent

b)

1-solvent, 2-solute

c)

1-solution, 2- solute

d)

1-solvent, 2- solution

14.

According the solubility graph, what is the solubility of KNO3 at 60 °C? (answers in g/100g of water)

a)

40

b)

90

c)

130

d)

20

15.

At what temperature (in °C) are the solubility of NH3 and NaNO3 the same?

a)

15

b)

40

c)

55

d)

70

16.

What happens to precipitation when salt is put on a road in the wintertime?

a)

The vaporization point of the water is lowered.

b)

The freezing point of the water is lowered.

c)

The boiling point of the water is lowered.

d)

The condensation point of the water is lowered.

17.

A solution containing larger pieces of solute that are temporarily mixed into the solute, such as a muddy river after a storm, is a(n)

a)

colliod

b)

suspension

c)

solution

d)

homogeneous mixture

18.
Solvent is best defined as-
a)
a mixture in which the substances are spread out evenly between one another and cannot be told apart
b)
the ability of a substance to dissolve in another substance
c)
a substance that dissolves in another substance
d)
a substance into which another substance dissolves
19.
You can make a solution more concentrated by adding more __________.
a)
solute
b)
solvent
c)
water
20.
Contains the maximum amount of dissolved solute
a)
unsaturated solution
b)
supersaturated solution
c)
saturated solution
21.
What is a solute?
a)
The substance that does the dissolving in a solution.
b)
The substance that is dissolved into the solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
22.
Which technique could increase or speed up the rate of dissolving?
a)
Allowing the mixture to settle
b)
Stirring the mixture
c)
Adding more powder
d)
Adding more water
23.
If we are making Kool-aid with sugar, Kool-aid powder, and water, which part is the solvent?
a)
water
b)
powder
c)
sugar
d)
powder and sugar
24.
How does a solution become supersaturated?
a)
dissolve lots of solute in it.
b)
dissolve a little solute in it. 
c)
dissolve more solute than you should be able to. 
d)
dissolve a super amount of solvent in it. 
25.
A solute that contains polar molecules will dissolve in a solvent that contains
a)
nonpolar molecules
b)
polar molecules
c)
covalent molecules
d)
equal-sized molecules
26.
Oil molecules are nonpolar. What kind of solvent is required to remove an oil stain?
a)
saturated
b)
unsaturated
c)
polar
d)
nonpolar
27.

A student is preparing solutions for a laboratory experiment by dissolving solid solutes in liquid solvents. Which action will increase the rate of solubility

a)

lowering the temperature of the solvent

b)

stirring the solute in the solution

c)

increasing the pressure on the solution

d)

increasing the particle size of the solute

28.
What is unsaturated?
a)
A solution with more solute than solvent
b)
A solution with less than the maximum amount of solutes 
c)
A solution with the  perfect balance of solutes and solvents
d)
A solution with solids at the bottom
29.
The ___ is the thing being dissolved
a)
solute
b)
solvent
30.
The amount of solute actually dissolved in a given amount of solvent.
a)
dilution
b)
concentration
c)
saturated solution
d)
supersaturated mixture
31.
What does it mean to dilute a solution?
a)
lower the concentration of solute per solvent
b)
increase the concentration of solute per solvent
32.
__________ are made up of solutes and solvents.
a)
Solutions
b)
Suspension
c)
Colloid
33.
Which substance is MOST soluble at 0 ºC?
a)
KI
b)
NaNO3
c)
NaCl
d)
Ce2(SO4)3
34.
Which solute does not increase in solubility as temperature rises?
a)
NH3
b)
NaNO3
c)
KNO3
d)
NaCl
35.
Graph that shows the amount of solute that can be dissolved in 100 g of water at a certain temperature.
a)
Solubility curve
b)
Saturation curve
c)
Concentration curve
d)
Molarity curve
36.
How many grams of SO2 can dissolve at 50 ⁰C?
a)
5 g
b)
10 g
c)
20 g
d)
39 g
37.

Which of the following would result in being able to dissolve a greater amount of solid in a solution?

a)

Lower the temperature.

b)

Decrease the pressure of the solution.

c)

Increase the pressure of the solution.

d)

Heat the solution.

38.

Which of the following would increase the rate of dissolution of a solid?

a)

Cool the solution.

b)

Decrease the surface area of the solute.

c)

Increase the polarity of the solution.

d)

Break the solute into smaller particles.

39.

In a heated solvent, the particles of the solute move ___________ than in a cooler solvent.

a)

faster

b)

slower

40.
True or False? The higher the concentration of a solution the less solutes it has in it.
a)
True
b)
False
41.

___________ refers to the amount of solute dissolved in a given amount per volume of solution

a)

Concentration

b)

Dilution

c)

Precipitation

d)

None of the above

42.

How much KNO3 solute is saturated at 40 degrees?

a)

75

b)

55

c)

65

d)

85

43.

How much C12H22O11 solute is saturated at 40 degrees?

a)

240

b)

220

c)

230

d)

250

44.

How much NaBr solute is saturated at 70 degrees?

a)

110

b)

120

c)

130

d)

140

45.

Which solute is MOST likely a gas?

a)

KNO3

b)

NaNO3

c)

KCl

d)

Ce2(SO4)3

46.

At what temperature can you fully dissolve 140g of NaNO3?

a)

62

b)

73

c)

81

d)

You cannot determine this

47.

At what temperature can you fully dissolve 60g of KNO3?

a)

27

b)

30

c)

37

d)

You cannot determine this

48.

What type of a solution is 60g NaNO3 at 40ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

49.

25 grams of NaCl are dissolved in 100 mL of water at 60 C. How many more grams need to be dissolved for the solution to be saturated?

a)

13 grams

b)

25 grams

c)

6 grams

d)

38 grams

50.

How many grams of K2Cr2O7, are soluble in 50 g of water at 90ºC?

a)

70 grams

b)

35 grams

c)

140 grams

d)

105 grams

51.
Which substance is MOST soluble at 0 ºC?
a)
KI
b)
NaNO3
c)
NaCl
d)
Ce2(SO4)3
52.

How many grams of KClO3, are soluble in 200g of water at 30ºC?

a)

5 grams

b)

100 grams

c)

10 grams

d)

20 grams

53.
How does a solution become supersaturated?
a)
dissolve lots of solute in it.
b)
dissolve a little solute in it. 
c)
dissolve more solute than you should be able to. 
d)
dissolve a super amount of solvent in it. 

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