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Final Exam Review Spring 2022

Total questions: 76

Worksheet time: 2hrs 53mins

Name
Class
Date
1.

To increase the concentration of a solution, you would -

a)

increase the amount of solute

b)

increase the amount of solvent

c)

cool the solvent

d)

cool the solute

2.
How can we increase the gas pressure inside a sealed container?
a)
Increase the number of particles inside the container
b)
Increase the temperature
c)
Decrease the volume of the container
d)
All of these
3.

Calculate the molar mass of Ba(C2H3O2)2

a)

255.3 g/mol

b)

237.3 g/mol

c)

228.3 g/mol

d)

196.3 g/mol

4.
How many molecules are in 9.4 moles of AlCl3?
a)
5.66
b)
5.66x1024
c)
0.705
d)
1.25x1023
5.

What is the percent by mass of a solution made by dissolving 20.0 g of NaCl into 180.0 g of water?

a)

10.0 %

b)

11.1 %

c)

80.0 %

d)

20.0 %

6.
Elements in the same ________ are more chemically similar.
a)
group
b)
period
c)
club
d)
table
7.
Which elements have the most similar chemical properties?
a)
K and Na
b)
K and Ca
c)
K and Cl
d)
K and S
8.
Name the acid: HC2H3O2
a)
Acetic Acid
b)
Acetous Acid
c)
Hydrogen Acetate
d)
Hydrogen Dicarbon Trihydrogen Dioxygen
9.

What is the charge of phosphate?

a)
-1
b)
-3
c)
+1
d)
-2
10.

Aluminum ion would take a charge of

a)
1+
b)
2+
c)
3+
d)
0
11.
What is the correct formula for the compound, lithium oxide?
a)
LiO
b)
Li2O
c)
LiO2
d)
Li2O2
12.
What is the formula for manganese(III) oxide?
a)
MgO
b)
Mg2O3
c)
MnO
d)
Mn2O3
13.

Name the following ionic compound: MgSO4

a)

magnesium sulfoxide

b)

magnesium sulfide

c)

magnesium sulfate

d)

magnesium oxide

14.

You are given a small beaker of solution at room temp. You add a bit of solute to the solution and it dissolves. The solution was:

a)

saturated

b)

unsaturated

c)

concentrated

d)

warm

15.
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 
16.

How many grams of C are in 1.2 x 1024 atoms of C?

a)

28 grams

b)

24 grams

c)

6.02 grams

d)

1.2 grams

17.

Which of the following setups using dimensional analysis will correctly convert 27.76g of Li to atoms of Li?

a)

A

b)

B

c)

C

d)

D

18.

How many moles of water are in 16.94g of water?

a)

16.94 mol H2O

b)

0.9401 mol H2O

c)

305.3 mol H2O

d)

1.063 mol H2O

19.
The splitting of a nucleus into smaller nuclei is
a)
fusion
b)
fission
c)
decay
d)
gamma radiation
20.
A catalyst works by
a)
changing the order of the reaction
b)
increasing the temperature
c)
lowering the activation energy
d)
making the activated complex
21.
__Na + __Cl2 --> __NaCl
a)
1,1,2
b)
2,1,2
c)
2,1,1
d)
already balanced
22.
What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
23.

Which letter indicates where water is in both the solid and liquid phase at the same time?

a)

A

b)

B

c)

C

d)

D

e)

E

24.

A measure of the average kinetic energy of the particles in an object is called

a)

Heat

b)

Temperature

c)

Kinetic energy

d)

Enthalpy

25.
What is point A?
a)
triple point
b)
critical point
c)
equilibrium point
d)
normal melting point
26.
KOH + H3PO4 --> K3PO4 + H2O
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
27.
Si + S8 --> Si2S4
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
28.
Pb(NO3)2 --> PbO + NO2 + O2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
29.

What happens to the ability of a solid to dissolve when temperature decreases?

a)

There is no change in the solubility of the solid.

b)

The solubility of most solids will increase.

c)

The only factor that affects the solubility of a solid is polarity.

d)

The solubility of most solids will decrease.

30.

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.

31.

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

a)

Cool the solid solute and the solution.

b)

Shake the solution.

c)

Evaporate the solvent.

d)

Break the solvent into smaller particles.

32.
If you have a substance with a pH of 7.1 it is a(n).....
a)
Acid
b)
base
33.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
34.

If the pH of a solution is 4.0, what is the pOH?

a)

4.0

b)

10.0

c)

1.0 x 10 -4

d)

cannot be determined from the information

35.

The pH of a solution is 8.43. What is the [H+]concentration?

a)

3.7 x 10 -9

b)

1.0 x 10-8.43

c)

2.7 x 10-6

d)

1.0 x 10-14

36.

If the [H+] of a solution is 1 x 10-3 M, the pH is

a)

11

b)

-3

c)

3

d)

1

37.

If the [OH-] of a solution is 2.7 x 10-4 M, the pOH of the solution is

a)

10.44

b)

1.00

c)

3.57

d)

-4.43

38.

Oranges have a [H+] of 1.7 x 10-2 M. Their pOH is

a)

1.77

b)

12.23

c)

10.91

d)

3.09

39.

What is the [H+] if the pH is 4.0?

a)

1.0 x 10-10 M

b)

1.0 x 10-14 M

c)

1.0 x 10-4 M

d)

1.0 x 10-7 M

40.

At 10'C, NaNO3's solubility is 80 g/100 g of H2O. Based on this information, what would the solubility be in 50 g of H2O.

a)

40

b)

80

c)

160

d)

16

41.

What is the mass number of a nitrogen atom that has 8 neutrons?

a)

15

b)

14

c)

22

d)

8

42.

Convert

100oC100^oC  to Kelvin

a)

373 K373\ K  

b)

273 K273\ K  

c)

212 K212\ K  

d)

0 K0\ K  

43.

What are the products of the following equation?

F2 + Ca →

a)

FCa

b)

F2Ca

c)

CaF2

d)

FCa

44.
Calculate the atomic number of an atom with :
2 protons
3 neutrons
4 electrons
a)
2
b)
3
c)
4
d)
5
45.
Which element has 6 protons?
a)
N
b)
C
c)
O
d)
B
46.
When Pressure increases then the Volume must...
a)
Increase
b)
decrease
47.

How long would it take for an element with a half-life of 100 years to reach 5 half-lives?

a)

50

b)

500

c)

5000

d)

5

48.

The melting point of the sample is

a)

-60 ºC

b)

-100 ºC

c)

60 ºC

d)

100 ºC

49.

Given the heating curve of a solid being heated at a constant rate, what is the boiling point of this substance?

a)

20°C

b)

50°C

c)

110°C

d)

170°C

50.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
51.
What is the mass number defined as?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
52.

Tastes bitter

a)

acid

b)

base

c)

both an acid and a base

53.

tastes sour

a)

acid

b)

base

c)

both an acid and a base

54.

Has a pH less than 7

a)

acid

b)

base

c)

both an acid and a base

55.

Conducts electricity (has electrolytes)

a)

acid

b)

base

c)

both an acid and a base

56.

Feels slippery

a)

acid

b)

base

c)

an acid and a base

57.
For the following reaction, how many moles of silver is produced, if 10 moles of silver nitrate is completely reacted during the reaction?
2AgNO3 + Cu --> Cu(NO3)2 + 2Ag
a)
2 moles
b)
2.5 moles
c)
5 moles
d)
10 moles
58.
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
a)
0.85 g
b)
290 g
c)
450 g
d)
870 g
59.

When reacting Na with Cl2, we calculated that the theoretical yield should be 13 grams. Our actual yield was 12.5 grams. What is the percent yield?

a)

90.4%

b)

104%

c)

96.15%

d)

1.04%

60.
If I dissolve sugar in water, what is the solute?
a)
Water
b)
Hydrogen
c)
Sugar
d)
Carbon
61.

If I dissolve carbon dioxide in water, what is the solvent?

a)

Carbon Dioxide

b)

There is no solvent

c)

Oxygen

d)

Water

62.
A gas occupies 4.98 L at 2.6 atm of pressure. What volume does it occupy at 1.8 atm pressure?
a)
12.9 L
b)
0.72 L
c)
7.2 L
d)
3.44 L
63.

How many valence electrons does sodium have?

a)

1

b)

2

c)

3

d)

4

64.
A material that can stop gamma radiation is
a)
lead
b)

paper

c)

aluminum foil

d)
wood
65.
A material that can stop alpha radiation is
a)
lead
b)
paper
c)
sunscreen
d)
wood
66.
Which element has the smaller atomic radius: potassium (K) or bromine (Br)?
a)
potassium (K)
b)
bromine (Br)
67.
What is the missing isotope that will balance the following nuclear equation?
94Be  +  11H →  _____  +  42He
a)
105B
b)
105Ne
c)
63Li
d)
63C
68.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
69.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
70.
Determine the Celsius temperature of 2.49 moles of gas contained in a 1.00-L vessel at a pressure of 143 kPa. 
a)
-266 degrees C
b)
-622 degrees C
c)
622 degrees C 
d)
266 degrees C
71.
What is the product when rubidium and oxygen gas react?
a)
RbO2
b)
Rb2O
c)
RbO
d)
Rb2O2
72.

Predict the products, before balancing.

Co2(SO4)3 + NaOH -->

a)

CoOH + NaSO4

b)

CoNa + OH(SO4)3

c)

Co2OH + Na(SO4)3

d)

Co(OH)3 + Na2SO4

e)

no reaction

73.
ΔH value in an endothermic reaction is a positive number.
a)
True
b)
False
74.
A mixture of hydrogen, nitrogen, and water vapor has a total pressure of 864 mmHg. The partial pressure of hydrogen is 220 mmHg and that of nitrogen is 410 mmHg. What is the partial pressure of water vapor?
a)
234 mmHg
b)
1.37 mmHg
c)
2.64 mmHg
d)
1, 494 mmHg
75.

There are 65 liters of helium in a balloon at 35 K. If the temperature of the balloon is increased to 40 K, what will the new volume of the balloon be?

a)

40 L

b)

70 L

c)

74.3 L

d)

75.9 L

76.

Calculate the molarity of the following solution: 1.0 mole of KCl in 0.750 L of solution.

a)

0.750 M

b)

99 M

c)

1.3 M

d)

2.0 M

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