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Worksheets

Solutions

Total questions: 52

Worksheet time: 2hrs 30mins

Name
Class
Date
1.
What is a substance that is dissolved in another substance? 
a)
solution
b)
solute
c)
solvent
d)
compound
2.
What is a solvent?
a)
The substance that does the dissolving in a solution.
b)
The substance that is being dissolved in a solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
3.
air is a 
a)
compound
b)
element
c)
heterogeneous mixture
d)
solution
4.
Another name for a homogeneous mixture is 
a)
an element.
b)
a solution.
c)
a compound.
5.
Kool-Aid - Powder, sugar, and water
Identify the solvent 
a)
water
b)
powder
c)
sugar
d)
powder and sugar
6.
The concentration of a mixture can be increased in which of the following ways?
a)
Heating the mixture
b)
Adding more water “solvent”
c)
Adding more powder “solute”
d)
Stirring the mixture
7.
How many grams of K2Cr2O7, are soluble in 100 g of water at 95 ºC?
a)
83 grams
b)
75 grams
c)
40 grams
d)
12 grams
8.
When a certain amount of solvent cannot hold any more solute it is called a ________ solution.
a)
Diluted
b)
Saturated
9.
Which solute is the most soluble at 10 ⁰C?
a)
KI
b)
KClO3
c)
NH4Cl
d)
NH3
10.
Which solute is the least soluble at 90 ⁰C?
a)
SO2
b)
KClO3
c)
KI
d)
HCl
11.
How does a solution become supersaturated?
a)
dissolve lots of solvent 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. 
12.
When 20 grams of potassium chlorate, KClO3, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:
a)
supersaturated
b)
saturated
c)
unsaturated
13.
When 50 grams of KCl is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:
a)
supersaturated
b)
unsaturated
c)
saturated
14.

Which of the following actions will NOT

increase the rate of dissolution

(dissolving)?

a)

Stirring the solution

b)

Decreasing the temperature

c)

Increasing the surface area of the

solute

d)

Increasing the temperature

15.

How do you know when you have a saturated solution?

a)

You don't see anymore material in the solution. It has dissolved.

b)

The material dissolves and no more will dissolve because you see it collect at the bottom.

c)

The solution is bubbling and cloudy.

d)

The solution is clear and there is nothing at the bottom.

16.
salt water is a 
a)
compound
b)
element
c)
heterogeneous mixture
d)
solution
17.
This type of mixture contains two or more substances that are visibly distinguishable. 
a)
homogeneous
b)
heterogeneous
c)
solution
d)
colloid
18.
Olive Oil
a)
Heterogeneous  mixture
b)
Homogeneous mixture
19.

Which of the following is NOT TRUE about Heterogeneous Mixtures?

a)

They will settle out over time

b)

Individual particles are often distinguishable

c)

Solutions are a type of heterogenous mixture

d)

Emulsions, Suspensions, and Collides are types of Heterogeneous Solutions.

20.
When materials combine to form a mixture, they
a)
A. keep their original properties.
b)
B. react to form a new substance with new properties.
c)
C. combine in a specific ratio.
d)
D. always change their physical state.
21.
What is the unit for molarity?
a)
mass/liters
b)
moles
c)
liters
d)
moles/liter
22.
A measure of the amount of solute in a given amount of solvent or solution is...
a)
saturated
b)
solubility
c)
concentration
d)
miscible
23.
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.
24.
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.
25.
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
26.
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
27.
What is it about the water molecule that makes it a great solvent?
a)
water demonstrates polarity; a partial charge on each side of the molecule
b)
due to its molecular formula
c)
it has a liner molecular shape
d)
due to it's non-polar molecular structure
28.
What is the correct formula to solve for the Molarity of a solution that has .4 moles of HCl in 9.5 L of solution?
a)
M = 9.5 L / .4 mol
b)
M1V1=M2V2
c)
M = .4 mol / 9.5 L
d)
none of the other choices
29.
A questions asks, "what volume of 0.125 M KMnO4 is required to yield 0.180 mol of potassium permanganate,
KMnO4?"  What is the correct formula set up to solve for this problem?
a)
.125 M = .180 mol / L
b)
M1 V1 = M2 V2
c)
.125 M = L / .180 mol
d)
none of the choices listed
30.
Which of the following would result in being able to dissolve a greater amount of gas in a
solution?
a)
Heat the gas and solution
b)
Decrease the pressure of the solution
c)
Make the gas an electrolyte
d)
Cool the gas and solution
31.
90 grams of sodium nitrate (NaNO3) are put into 100 grams of water and stirred. The final
mixture has a temperature of 20°C. About how many grams of the sodium nitrate dissolved?
a)
23
b)
73
c)
80
d)
88
32.
Calculate the molarity of a solution prepared by dissolving 78.2 grams of CaCl2 in 500.0mls of water
a)
0.156 M
b)
0.709 M
c)
0.353 M
d)
1.41 M
33.
As the pressure decreases the solubility of a gas in a liquid
a)
increases
b)
decreases
34.
What mass of NaCl is needed to prepare 850 mls of 6.0 M NaCl solution?
a)
5.1 grams
b)
0.087 grams
c)
87 grams
d)
298 grams
35.
What is the molarity of  420 mls of a KCl solution that contains 16.0 grams of KCl
a)
625 M
b)
0.51 M
c)
3.19 M
d)
0.00563 M
36.
How much of the 12.0 M stock solution do you need to prepare 250 mls of .20M HCl?
a)
15,000 mls
b)
4.17 mls
c)
9.6 mls
d)
0.0096 mls
37.
Which of these is a colloid?
a)
paint
b)
salt water
c)
air
d)
gasoline
38.
amount of solute that can dissolve in a given amount of solvent at a given temperature
a)
saturated solution
b)
solubility
c)
pure substance
d)
colloid
39.
A precipitate is:
a)
The solid material that forms as a product of a chemical reaction
b)
The dissolved liquid in a chemical reaction
c)
The fizzing during a chemical reaction
d)
None of these
40.
All _____ are mixtures, but not all mixtures are ______
a)
solutions; solutions
b)
solutions; saturated
c)
saturations; solutions
d)
solutions; dissolved
41.

A solute is........

a)

any substance that will dissolve in a solvent

b)

anysubstance that will not dissolve in a solvent

c)

the same as a solvent

d)

is always a solid

42.

Which of the following is NOT a unit used to express concentration?

a)

Molality

b)

Molarity

c)

Mass percent

d)

Density

43.

The moles of solute can be determined by multiplying the molarity of the solute by the volume of solvent.

a)

True

b)

False

44.
Which of the following is an electrolyte?
a)
sodium chloride
b)
sugar (carbon, oxygen, hydrogen)
c)
water (hydrogen and water)
d)
sand (silicon and oxygen)
45.
This is a heterogeneous mixture in which particles settle out unless it is constantly stirred.
a)
colloid
b)
suspension
c)
solution
d)
alloy
46.

What is the percent by mass of a solution that contains 12.0 g of solute per 200.0 g of solution?

a)

5.6%

b)

6%

c)

2.4%

d)

16.7%

47.

What is the percent by mass of a solution containing 56.5 g of salt in 500 g of water?

a)

11.3 %

b)

5.56%

c)

8.85%

d)

10.2 %

48.

What is the percent by volume of a solution containing 20.0 mL of solute in 350mL solution?

a)

5.7%

b)

5.4%

c)

3.70%

d)

17.5%

49.

What is the molarity of a solution that contains 1.75 moles of solute in 2.0 L of solution?

a)

0.875 M

b)

1.75 M

c)

68.6 M

d)

3.5 M

50.

Which of these is NOT a factor that affects solvation?

a)

agitation/stirring

b)

increasing temperature

c)

increasing surface area

d)

adding dye

51.

A dissolved solute that does not form ions is

a)

a nonelectroyte

b)

a weak electrolyte

c)

a strong electrolyte

d)

insoluble

52.

Which solution would be least likely to carry an electric current?

a)

NaCl

b)

HCl

c)

C6H12O6

d)

CsI

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