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Solutions

Total questions: 65

Worksheet time: 3hrs 36mins

Name
Class
Date
1.
What is a "homogeneous mixture of two or more substances in a single phase"?
a)
Solution
b)
Solvent
c)
Solute
d)
Compound
2.
What does it mean to be "Soluble" ?
a)
Capable of being a solid.
b)
To have soul.
c)
Capable of being dissolved.
d)
To sink.
3.
What is the unit for molarity?
a)
mass/liters
b)
moles
c)
liters
d)
moles/liter
4.
A measure of the amount of solute in a given amount of solvent or solution is...
a)
saturated
b)
solubility
c)
concentration
d)
miscible
5.
A saturated solution is one that....
a)
contains the maximum amount of dissolved solute.
b)
contains less solute than a saturated solution.
c)
contains more solute than a saturated solution.
d)
is the amount of a substance required to form a saturated solution.
6.
A supersaturated solution is one that....
a)
contains the maximum amount of dissolved solute.
b)
contains less solute than a saturated solution.
c)
contains more solute than a saturated solution.
d)
is the amount of a substance required to form a saturated solution.
7.
An unsaturated solution is one that....
a)
contains the maximum amount of dissolved solute.
b)
contains less solute than a saturated solution.
c)
contains more solute than a saturated solution.
d)
is the amount of a substance required to form a saturated solution.
8.
An electrolyte is...
a)
The rapid, random movement of particles in colloidal dispersion.
b)
A substance that dissolves in water and conducts electric current.
c)
A substance that dissolves in water and does not conduct electric current.
d)
The solution process when water is the solvent.
9.
A nonelectrolyte is...
a)
The rapid, random movement of particles in colloidal dispersion.
b)
A substance that dissolves in water and conducts electric current.
c)
A substance that dissolves in water and does not conduct electric current.
d)
The solution process when water is the solvent.
10.
The dissolving medium in a solution is called ... 
a)
colloid
b)
solution
c)
solute
d)
solvent
11.
The substance dissolved in a solution is called ... 
a)
colloid
b)
solution
c)
solute
d)
solvent
12.
What is the molarity of a 2 liter solution containing 5 moles of NaCl?
a)
2.5
b)
0.4
c)
2.5 moles/liter
d)
10 moles/liter
13.
How many moles of NaCl are present in 6000. ml a 1.5 M NaCl solution?
a)
9 moles NaCl
b)
9000
c)
9
d)
4000  moles NaCl
14.

Using the graph above, which compound would dissolve in the largest quantity at 20° C, KCl, NaCl, KNO3, or KClO3?

a)

KCl

b)

NaCl

c)

KNO3

d)

KClO3

15.

Using the graph above, which compound would dissolve in the largest quantity at 60° C, KCl, NaCl, KNO3, or KClO3?

a)

KCl

b)

NaCl

c)

K2Cr2O7

d)

KClO3

16.

What is the molarity of a solution when 100 mL water are used to dissolve 21g CuSO4?

a)

1.3 M

b)

3.4 M

c)

1.6 M

d)

0.84 M

17.

How many grams of NaCl need to be dissolved in 50mL of water to make a 0.2M solution?

a)

1.82g

b)

0.13g

c)

1.67g

d)

0.58g

18.

What is the name for a substance that dissolves in water but does not form ions or conduct an electric current?

a)

electrolyte

b)

nonelectrolyte

c)

saturated

d)

insoluble

19.

How many grams of MgCl2 are dissolved in 250mL of a 2.7M solution?

a)

0.635

b)

64.3

c)

0.675

d)

675

20.

When sugar is dissolved in water, the ______ is the solute.

a)

sugar

b)

water

21.
What does it mean to dilute a solution?
a)
lower the concentration of solute per solvent
b)
increase the concentration of solute per solvent
22.

The formula M1V1 = M2V2 is used when:

a)

dissolving a solute in a solvent

b)

diluting a solution

c)

reacting an acid with a base

d)

determining the pH of an acid

23.

A non-electrolyte is composed of __________in solution

a)

molecules

b)

molecules and ions

c)

ions

d)

none of the above

24.

What does "like dissolves like" mean?

a)

polar solvents dissolve in polar solutes

b)

polar solutes dissolve in polar solvents

c)

non-polar solvents dissolve in polar solutes

d)

non-polar solutes dissolve in polar solvents

25.

Gases are more soluble at ______temps and _____pressures

a)

high, low

b)

low , high

c)

high, high

d)

low, low

26.

Molarity concentration is abbreviated as _________

a)

MM.

b)

m.

c)

Mol.

d)

M.

27.
How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide? 
a)
2
b)
3
c)
4
d)
6 
28.

The solubility graph below shows the amounts of four substances that will dissolve in 100 grams of water at various water temperatures.


Which substance has 80 grams of solute dissolved in 100 grams of water at 50 C?

a)

Potassium Bromide

b)

Ammonium Chloride

c)

Potassium Chloride

d)

Lithium Hydroxide

29.

The red dot on this graph represents a certain number of grams of solute in a solution. This dot would represent a solution that is a(n) ___ solution

a)
saturated
b)
supersaturated
c)
unsaturated
d)
undefined
30.

The red dot on this graph represents a certain number of grams of solute in a solution. This dot would represent a solution that is a(n) ___ solution

a)
Unsaturated
b)
Supersaturated
c)
Saturated
d)
Undefined
31.
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 solvent in it. 
32.
Capable of being dissolved
a)
Soluble
b)
concentration
c)
colloid
d)
molarity
33.
When a solution is saturated:
a)
No additional material will dissolve in it
b)
You need to stir it more 
c)
Two materials have combined to create a clear liquid
d)
Crystals form 
34.

Which of the following factors affects the solubility amount & rate of solubility?

a)

temperature

b)

surface area

c)

agitation

d)

amount of solvent

35.
Which of the following would dissolve the slowest?
a)
a sugar cube in hot water
b)
a sugar cube in cool water
c)
powdered sugar in cool water
d)
powdered sugar in hot water
36.
In chemistry, a "mole" is:
a)
The mass of an atom
b)
a large number used to count particles
c)
based on the volume of a substance
37.
What is the molar mass of NaCl?
a)
58.45g/mol
b)
28g/mol
c)
12g/mol
d)
6.02 x 1023
38.
How do we get mass from moles?
a)
multiply by avogadro's number
b)
multiply by molar mass
c)
divide by avogadro's number
d)
divide by molar mass
39.

Which would NOT increase the rate at which a sugar cube dissolves?

a)

Reducing the amount of solvent

b)

Crushing the sugar cube

c)

Stirring the solution

d)

Heating the solvent

40.

Three 10 g samples of sugar are represented below.


Sample A dissolves in water more slowly than sample B.

Sample B dissolves more slowly than sample C.

Which of the following best explains why sample A dissolves more slowly than the other two?

a)

It has the most volume.

b)

It has the smallest surface area.

c)

It has the largest number of sugar molecules.

d)

It has the fewest bonds between sugar modules.

41.
A solution is a ________ mixture. 
a)
heterogeneous 
b)
homogeneous 
c)
dumb 
d)
mixed 
42.
When one of the parts of the solution is water we call it _________. 
a)
water stuff 
b)
water mixture 
c)
aqua-man
d)
aqueous 
43.
In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

a)
stir the powder in the liquid
b)
freeze the mixture
c)
add more powder to the liquid
d)
store the mixture in a dark place
44.

The separation of molecules into smaller ions (when dissolving)

a)

Miscible

b)

Saturated

c)

Solvent

d)

Dissociation

45.

A substance that is a good conductor of electricity when in solution.

a)

Electrolyte

b)

Miscible

c)

Solute

d)

Suspension

46.

Which diagram best illustrates the orientation of water molecules and ions that occurs when NaCl(s) is added to water?

a)

1

b)

2

c)

3

d)

4

47.

A solid substance was tested in the laboratory. The test results are listed below.

• dissolves in water

• is an electrolyte

• melts at a high temperature

Based on these results, the solid substance could be

a)

Cu

b)

CuBr2

c)

C

d)

C6H12O6

48.

Which of the following is not an electrolyte?

a)

KBr

b)

LiOH

c)

RbNO3

d)

CH4

49.

Which solute would separate into molecules when it dissolved?

a)

NaCl

b)

HCl

c)

C6H12O6

d)

CsI

50.

You make a Kool Aid drink using Kool Aid powder, sugar, & water & you notice your drink still has to much powder sitting at the bottom. What will happen if you add more water to the drink?

a)

decrease the solubility of your drink

b)

decrease the solubility rate of your drink

c)

increase the solubility rate of your drink

d)

increase the solubility of your drink

51.

Which of the following factors affects the solubility amount & rate of solubility?

a)

temperature

b)

surface area

c)

agitation

d)

amount of solvent

52.
What type of solution is holds more than the maximum amount of solute when it is rapidly heated & then cooled slowly producing crystals?
a)
unsaturated 
b)
saturated 
c)
supersaturated 
53.
According to the table which solute is nonpolar.
a)
ammonium chloride
b)
naphthalene
c)
ethanol
d)
urea
54.
Which salt is LEAST soluble at 0 ºC?
a)
K2Cr2O7
b)
KNO3
c)
 KClO3
d)
Ce2(SO4)3
55.

In this scenario, which formula should you use to solve it? How many mL of a 1.00 M stock solution should be

used to mak 2.00 L of a 0.300 M sulfuric acid solution

a)

molarity formula, (Moles solute/ L of solution)

b)

dilution formula, M1V1 = M2V2

c)

M x V = #moles

d)

V x M x MM = g

56.

What mass of solute is needed to make 100.0 g of a 3.4% solution?

a)

3.4 g

b)

34 g

c)

2941 g

d)

0.34 g

57.

What mass of solute is needed to make 100.0 g of a 3.4% solution?

a)

3.4 g

b)

34 g

c)

2941 g

d)

0.34 g

58.

What is the molarity of a solution containing 4.26 g of KCl in 1.25 L of solution? [Change g to mol first, molar mass of KCl = 74.55 g/mol or use V M MM = g]

a)

3.41 M

b)

0.0457 M

c)

0.0571 M

d)

0.0714 M

59.

According to Table F, which barium salt is insoluble in water?

a)

BaCO3

b)

BaCl2

c)

Ba(ClO4)2

d)

Ba(NO3)2

60.

According to Table F, which ions combine with chloride ions to form an insoluble salt?

a)

K+ ions

b)

Ca2+ ions

c)

Pb2+ ions

d)

Na+ ions

61.

REVIEW: According to Table G, how many grams of KNO3 would be needed to saturate 50g of water at 70oC?

a)

268 g

b)

134 g

c)

100 g

d)

67 g

62.

According to Reference Table F, calcium hydroxide is soluble in water.


Identify the other hydroxide compound that contain a Group 2 element and are also soluble in water.

a)

Mg(OH)2

b)

barium hydroxide

c)

Sr(OH)2

d)

NH4OH

63.

Based on Reference Table F, describe the solubility of magnesium hydroxide in water.

a)

magnesium hydroxide is INSOLUBLE in water

b)

magnesium hydroxide is SOLUBLE in water

64.

Identify one ion from Table F that can combine with Pb2+(aq) to produce an insoluble compound.

a)

Cl-

b)

NO3-

c)

ClO3–

d)

all of these are insoluble

65.

At STP, which of these substances is most soluble in H2O?

a)

CCl4

b)

HCl

c)

CO2

d)

N2

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