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lesson 2 unit 3

Total questions: 33

Worksheet time: 3hrs 45mins

Name
Class
Date
1.

Concentration is

a)

the amount of solute in the solvent

b)

the amount of solvent in the solute

c)

density

d)

particle size

2.

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt


Solution 2:

500 mL of water

90 g of salt

a)

Solution 1

b)

Solution 2

c)

They have the same concentration

d)

I have no idea

3.

Which solution is more concentrated?


Solution 1:

20 mL of water

5 g of salt


Solution 2:

20 mL of water

10 g of salt

a)

Not enough information to tell

b)

Solution 1

c)

Solution 2

d)

They are equally concentrated

4.

In order to dilute a solution, you need to

a)

add more of the solid

b)

add more water

c)

find the mass

d)

find the volume

5.

Which solution is more diluted?

Solution 1:

1000 mL of water

60g of salt


Solution 2:

500 mL of water

60 g of salt

a)

Not enough information to tell

b)

Solution 1

c)

Solution 2

d)

They are equally diluted

6.

Both of these solutions have a volume of 30 mL. Which solution is more concentrated?

a)

orange solution

b)

green solution

c)

they are equally concentrated

7.

Both solutions have equal volumes of 30 mL. Which solution is more diluted?

a)

Solution X

b)

Solution Y

8.
__________ are made up of solutes and solvents.
a)
Solutions
b)
Suspension
c)
Colloid
d)
mixtures
9.
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 
10.
This is the part of a solution that dissolves
a)
Solute
b)
Solvent
c)
Solution
d)
Mixture 
11.
salt water is a 
a)
compound
b)
element
c)
heterogeneous mixture
d)
solution
12.
When a certain amount of solvent cannot hold any more solute it is called a ________ solution.
a)
Diluted
b)
Saturated
13.
A saturated solution is______
a)
No more solute can be dissolved
b)
More solute can be dissolved
c)
The solvent and solution
14.

What is the concentration, in percent by mass, of 0.62 g of solute in 45.0 g of solution?

a)

0.014 %

b)

1.4 %

c)

0.13%

15.

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

16.

What is the percent by mass of a solution made by dissolving 10.0 g of NaCl into 180.0 g of water?

a)

5.26 %

b)

5.56 %

c)

180.0 %

d)

20.0 %

17.

What is the molarity of a solution containing 4 moles of KCl in 2.5 L of solution?

a)

1.6 M

b)

0.63 M

c)

10 M

d)

2.6 M

18.

How many moles of NaCl are needed to make 5.25 L of a 0.25 M solution?

a)

1.3 mol

b)

21 mol

c)

0.048 mol

19.

How many grams of KCl would be dissolved in 5.50 L of a 0.250 M solution of KCl? *molar mass of KCl = 74.55 g/mol*

a)

1.48 g

b)

103 g

c)

1640 g

d)

3.39 g

20.
Determine the molarity of 2.25 mole of sulfuric acid, H2SO4, dissolved in 725 mL of solution.
a)
322.2 M
b)
3.1 M
c)
0.32 M
d)
2.25 M
21.
What is the molarity of 3 mole of hydrochloric acid in 3 L of water. 
a)
3
b)
1
c)
6
d)
9
22.
How many moles of NaCl are present in a solution with a molarity of 8.59M and 125 mL of solution?
a)
1.07 gram
b)
62.7 mol
c)
1.07 mol
d)
62.7 grams
23.
Molarity is measured in
a)
moles per kg
b)
mols per L
c)
moles per kJ
d)
moles per mL
24.
What is the concentration, in percent by volume, of 15.3 mL of solute in 2.65 L of solution?
a)
0.58%
b)
0.0058%
c)
5.8%
25.
What mass of solute is needed to make 75.0 g of a 3.4% solution?
a)
2.55 g
b)
22 g
c)
0.05 g
26.

Determine the percent by mass of 3.6 grams of sodium chloride in 100 grams of water.

a)

3.47%

b)

6.0%

c)

5.5%

d)

0.34%

27.
What mass of solute is needed to make 75.0 g of a 3.4% solution?
a)
2.55 g
b)
22 g
c)
0.05 g
28.
What is the concentration, in percent by volume, of 15.3 mL of solute in 2.65 L of solution?
a)
0.58%
b)
0.0058%
c)
5.8%
29.

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%

30.

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%

31.

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

32.

Water is known as the universal...

a)

dissolver

b)

solute

c)

concentration

d)

solvent

33.
What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?
a)
0.018 M
b)
0.0011 M
c)
1.052 M
d)
0.062 M

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