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Unit 8/9 Reg Mandatory Review

Total questions: 135

Worksheet time: 8hrs 45mins

Name
Class
Date
1.

​ (a)   C3H8 +​ (b)   O2 --> ​ (c)   CO2 + ​ (d)   H2O

Choose from the below words
5
1
3
4
2
6
0
8
9
10
2.

​ ​ (a)   C3H6 +​ (b)   O2 --> ​ (c)   CO2 + ​ (d)   H2O

Choose from the below words
5
3
4
2
6
0
8
9
10
3.

​ ​ (a)   C4H10 +​ (b)   O2 --> ​ (c)   CO2 + ​ (d)   H2O

Choose from the below words
5
3
4
2
6
14
8
13
10
12
4.

​ (a)   Al + ​ (b)   Fe3N2 --> ​ (c)   AlN + ​ (d)   Fe

Choose from the below words
3
2
1
4
5
6
7
8
9
0
5.

​ (a)   Na + ​ (b)   Cl2 --> ​ (c)   NaCl

Choose from the below words
2
1
3
4
0
6
7
6.

​ (a)   H2O2 --> ​ (b)   H2O + ​ (c)   O2

Choose from the below words
1
2
0
3
4
5
7
10
7.

​ (a)   BF3 + ​ (b)   Li2SO3 --> ​ (c)   B2(SO3)3 + ​ (d)   LiF

Choose from the below words
1
3
2
6
4
8
10
9
12
8.

​ (a)   NH3 + ​ (b)   H2SO4 → ​ (c)   (NH4)2SO4

Choose from the below words
2
1
3
5
6
8
7
9.

​ (a)   H3AsO4 → ​ (b)   As2O5 + ​ (c)   H2O

Choose from the below words
2
1
3
4
5
6
8
10
9
10.

​ (a)   (NH4)3PO4 + ​ (b)   Pb(NO3)4 → ​ (c)   NH4NO3 + ​ (d)   Pb3(PO4)4

Choose from the below words
4
3
12
1
10
6
8
2
0
11.

​ (a)   C2H4 + ​ (b)   O2 → ​ (c)   CO2 + ​ (d)   H2O

Choose from the below words
1
3
2
0
4
5
6
8
10
12.

​ (a)   K + ​ (b)   MgBr2 → ​ (c)   KBr + ​ (d)   Mg

Choose from the below words
2
1
0
3
4
5
7
13.

​ (a)   PCl5 + ​ (b)   H2O →​ (c)   HCl + ​ (d)   H3PO4

Choose from the below words
1
4
5
0
2
3
6
10
15
12
14.

​ (a)   Zn + ​ (b)   HCl --> ​ (c)   ZnCl2  + ​ (d)   H2

Choose from the below words
1
2
0
3
4
5
6
15.

​ (a)   Na + ​ (b)   H2O --> ​ (c)   NaOH + ​ (d)   H2

Choose from the below words
2
1
0
3
4
5
6
16.

​ (a)   Fe + ​ (b)   O2 →\rightarrow ​ (c)   Fe2O3

Choose from the below words
4
3
2
0
1
5
6
7
8
17.

​ (a)   CF4 + ​ (b)   Br2 --> ​ (c)   CBr4 + ​ (d)   F2

Choose from the below words
1
2
0
3
4
5
6
7
8
18.

Is the following equation balanced or unbalanced?
​ (a)   Fe +​ (b)   S --> ​ (c)   Fe2S3

Choose from the below words
2
3
1
0
4
5
6
8
9
19.

​ (a)   HgO --> ​ (b)   Hg + ​ (c)   O2

Choose from the below words
2
1
0
3
4
5
6
20.

​ (a)   CF4 + ​ (b)   Br2 -- ​ (c)   CBr4 + ​ (d)   F2

Choose from the below words
1
2
0
3
4
5
6
7
8
21.

​ (a)   CS4  + ​ (b)   Br2  →\rightarrow ​ (c)   CBr4  + ​ (d)   S

Choose from the below words
1
2
4
0
3
6
5
8
7
22.

​ (a)   AlCl3 + ​ (b)   Li --> ​ (c)   LiCl + ​ (d)   Al

Choose from the below words
3
1
0
2
4
5
6
7
8
23.

​ (a)   BaS + ​ (b)   PtF2 ---> ​ (c)   BaF2 + ​ (d)   PtS

Choose from the below words
1
0
2
3
4
5
6
24.

​ (a)   CH4. + ​ (b)   O2  --->  ​ (c)   CO2 + ​ (d)   H2O

Choose from the below words
1
2
0
3
4
5
6
7
8
25.

​ (a)   NaClO3  --> ​ (b)   NaCl + ​ (c)   O2

Choose from the below words
2
3
1
4
5
6
8
10
26.

​ (a)   MgCl2 --> ​ (b)   Mg4+ ​ (c)   Cl2

Choose from the below words
4
1
2
0
3
5
6
7
8
27.

​ (a)   Sn + ​ (b)   HF → ​ (c)   SnF₂ + ​ (d)   H₂

Choose from the below words
1
2
0
3
4
5
6
7
8
28.

​ (a)   Al +​ (b)   HCl --> ​ (c)   H2  + ​ (d)   AlCl3

Choose from the below words
2
6
3
0
1
4
5
7
8
29.

​ (a)   Ag2O3 → ​ (b)   Ag + ​ (c)   O2

Choose from the below words
2
4
3
0
1
5
6
7
8
9
30.

​ (a)   Ag + ​ (b)   HCl → ​ (c)   H2 + ​ (d)   AgCl4

Choose from the below words
1
4
2
0
3
5
6
7
8
9
31.

​ (a)   FeCl3 + ​ (b)   Ca(OH)2 --> ​ (c)   Fe(OH)3 + ​ (d)   CaCl2

Choose from the below words
2
3
0
1
4
5
6
7
8
32.

​ (a)   MnO2 + ​ (b)   HCl --> ​ (c)   MnCl2 + ​ (d)   H2O + ​ (e)   Cl2

Choose from the below words
1
2
4
0
3
5
6
7
8
9
33.
The number of atoms you begin with in a chemical reaction ...
a)
must be the same as the number of  atoms you end with
b)
must be an even number
c)
can be different to the number you finish with
d)
changes depending on how much energy is formed
34.

True or false:

In any physical change or chemical reaction, mass is conserved.

a)

True

b)

False

35.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
36.

Label the following colors of a reaction properly.

2H2 + O2 →\rightarrow 2H2O

a)

blue

1.

reactants

b)

green

2.

products

c)

yellow

3.

subscripts

d)

red

4.

coefficients

37.

Label the following colors of a reaction properly.

2H2 + O2 →\rightarrow 2H2O

Categorize the following

reactants

products

subscripts

coefficients

can change when balancing

cannot change when balancing

blue
green
yellow
red
38.
Convert 1.5 moles of beryllium oxide to molecules
a)
25.01 molecules
b)
9.0 x 1023 molecules
c)
0.12 molecules
d)
1.80 x 1024 molecules
39.
How many molecules are in 9.4 moles of AlCl3?
a)
5.66
b)
5.66x1024
c)
0.705
d)
1.25x1023
40.
How many moles are in 6 x 1023 molecules of H2O?
a)
1
b)
2
c)
6
d)
600
41.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1023
b)
146
c)
4.15
d)
1.51x1024
42.
Where do you look to calculate the molar mass?
a)
avogadros number
b)
periodic table 
43.

How many moles are in 4.5x1024 Silver atoms?

a)

0.747 particles

b)

0.747 mol

c)

2.71x1047 mol

d)

2.71x1047 particles

44.
How many moles of carbon atoms are there in 5g of carbon?
a)
60 mol
b)
17 mol
c)
0.42 mol
d)
7 mol
45.
How many molecules are there in 5.9 moles of NaCl?
a)
3.5x1024molecules
b)
9.79x10-24molecules
c)
1.02x1023molecules
46.
What is the mass of 54.3x1045molecules of BeO?
a)
3.27x1070 g
b)
9.01 x1022g
c)
2.25 x1024 g
d)
1.31 x1069g
47.
How many moles are in 4.5x1024 particles?
a)
0.747 particles
b)
0.747 mol
c)
2.71x1047 mol
d)
2.71x1047 particles
48.
How many molecules are present in 69.0 moles of SrO?
a)
4.16x1025molecules
b)
8.72x1021molecules
c)
7,149.78 molecules
d)
6,893.32 molecules
49.
How many atoms of iodine are in a mole of iodine?
a)
53
b)
63.55g
c)
126.9
d)
6.02 x 1023
50.
The number 6.02 x 1023 is called...
a)
Obama's number
b)
Bohr's number
c)
Trump's number
d)
Avogadro's number
51.
Which has more molecules?
a)
1 mole H2O
b)
1 mole Al(OH)3
c)
1 mole NaCl
d)
There are all the same
52.
How many moles are in 4.3 x 1024 molecules of H2O?
a)
6.02 x 1023
b)
7.14
c)
18.02
d)
128.66 
53.
A mole of Neon contains
6.02 x 1023 _____.
a)
atoms
b)
formula units
c)
ions
d)
molecules
54.
Avogadro's number of representative particles is equal to one_____.
a)
kilogram
b)
gram
c)
kelvin
d)
mole
55.

What is a mole?

a)

6.022 x 1023 particles of any substance

b)

A small burrowing animal

c)

A dark spot on your skin

d)

A spy

56.

What is a mole?

a)

6.022 x 1023 particles of any substance

b)

A small burrowing animal

c)

A dark spot on your skin

d)

A spy

57.
How many molecules are there in 31.8 moles of water?
a)
5.28 x 10-23 molecules
b)
1.91 x 1025 molecules
c)
5.28x 10-25
d)
1.91 x 1022
58.
How many formula units are there in 2.45 moles potassium chloride?
a)
4.07 x 10-24 
b)
1.47 x 1024 
c)
1.47
d)
4.07
59.
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
60.
How many particles would be in 8.4 moles of Octane (C8H18)?
a)
5.77 x 1023
b)
5.04 x 1024
c)
5.77 x 1026
d)
5.04 x 1023
61.
What is the mole used for? 
a)
To measure the amount of grams in a substance
b)
To measure the amount of atoms or molecules in a substance
c)
To measure the amount of energy in a substance
d)
To measure the amount of bonding in a substance 
62.
How many students are there in 31.8 moles of students?
a)
5.28 x 10-23 students
b)
1.91 x 1025 students
c)
5.28x 10-25  students
d)
1.91 x 1022 students
63.
How many moles are 2.85 x 1020 atoms of iron?
a)
4.73 x 10-4 moles
b)
1.72 x 104 moles
c)
1.72 x 10-42 moles
d)
4.73 x 104 moles
64.
How many moles of copper are 4.57 x 1015 atoms of copper?
a)
7.59 x 10-9 moles
b)
2.75 x 10-33 moles
c)
7.59 x 109 moles
d)
2.75 x 1033 moles
65.
Convert 1.5 moles of beryllium oxide to molecules
a)
25.01 molecules
b)
9.0 x 1023 molecules
c)
0.12 molecules
d)
1.80 x 1024 molecules
66.

How many particles would be in 8.4 moles of Octane (C8H18)?

a)

5.77 x 1023 particles

b)

5.04 x 1024 particles

c)

5.77 x 1026 particles

d)

5.04 x 1023 particles

67.

What type of reaction is the bottom?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

1
2
3
4
1)
2)
3)
4)
68.

Organize these options into the right categories

Categorize the following

one thing on the right

one thing on the left

one thing in a compound being replaced

1 thing in a compound switches places with another in a different compound

creating one thing

destroying one thing

usually one element and 1 compound on both sides

2 compounds on both sides

synthesis
decomposition
single replacement
double replacement
69.

Match the following

a)

synthesis

1.

H2 + Cl2 →\rightarrow HCl

b)

decomposition

2.

H2O →\rightarrow H2 + O2

c)

combustion

3.

C5H12 + O2 →\rightarrow H2O + CO2

d)

single replacement

4.

Na2S + O2 →\rightarrow Na2O + S4

e)

double replacement

5.

NaCl + CaSe →\rightarrow Na2Se + CaCl2

70.

What type of reaction is this?

3Mg + N2 →\rightarrow Mg3N2

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

71.

What type of reaction is this?

P4 + 3O2 →\rightarrow 2P2O3

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

72.

What type of reaction is this?

NH3 + HCl →\rightarrow   NH4Cl 

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

73.
What type of chemical reaction is this?
Al(OH)3 → Al2O3  + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement 
e)

Double

Replacement

74.

What type of reaction is this?

2Pb(NO3)2 →\rightarrow 2PbO + 4NO2 + O2

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

75.

What type of reaction is this?

2NO2 →\rightarrow N2 + 2O2

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

76.

What type of reaction is this?

C5H10O4 + O2 →\rightarrow CO2 + H2O

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

77.

What type of reaction is this?

C25H46 + O2 →\rightarrow CO2 + H2O

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

78.

What type of reaction is this?

C12H24O2 + O2 →\rightarrow CO2 + H2O

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

79.

What type of reaction is this?

C15H34 + O2 →\rightarrow CO2 + H2O

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

80.

What type of reaction is this?

C3H6 + O2 →\rightarrow CO2 + H2O

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

81.

What type of reaction is this?

Fe + CaCl2 →\rightarrow Ca + FeCl3

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

82.

What type of reaction is this?

Zn + 2HCl →\rightarrow ZnCl2 + H2

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

83.

What type of reaction is this?

3Mg + 2AlCl3  →\rightarrow 3MgCl2 + 2Al

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

84.

What type of reaction is this?

Fe + H2SO4  →\rightarrow  Fe2(SO4)3 + H2

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

85.

What type of reaction is this?

Cl2 + H2SO4  →\rightarrow  SO4 + HCl

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

86.

What type of reaction is this?

3KOH + H3PO4  →\rightarrow K3PO4 + 3H2O

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

87.

What type of reaction is this?

KOH + NaCl  →\rightarrow KCl+ NaOH

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

88.

What type of reaction is this?

PbCl2 + AgNO3 →\rightarrow Pb(NO3)2 + AgCl 

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

89.

What type of reaction is this?

Ca(NO2)2 + AgCl →\rightarrow AgNO2 + CaCl2

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

90.

What type of reaction is this?

K3N + Ag2SO3 →\rightarrow Ag3N + K2SO3

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

91.

What type of reaction is this?

Li3PO4 + Al(ClO2)3 →\rightarrow AlPO4 + LiClO2

a)

synthesis

b)

decomposition

c)

combustion

d)

single

replacement

e)

double replacement

92.

Label the correct sides of the reaction

a)

reactants

b)

products

c)

productions

d)

reaction

1
2
1)
2)
93.

What is the correct molar mass for Mg(OH)2? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

94.

What is the percent composition of magnesium in Mg(OH)2? (Round to the ones place.)

Make sure to include the unit.

(a)  

95.

What is the percent composition of oxygen in Mg(OH)2? (Round to the ones place.)

Make sure to include the unit.

(a)  

96.

What is the percent composition of hydrogen in Mg(OH)2? (Round to the ones place.)

Make sure to include the unit.

(a)  

97.

What is the correct molar mass for N2H6O3 in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

98.

What is the percent composition of hydrogen in N2H6O3? (Round to the ones place.)

Make sure to include the unit.

(a)  

99.

What is the percent composition of oxygen in N2H6O3? (Round to the ones place.)

Make sure to include the unit.

(a)  

100.

What is the percent composition of nitrogen in N2H6O3? (Round to the ones place.)

Make sure to include the unit.

(a)  

101.

What is the correct molar mass for Fe2O3 in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

102.

What is the percent composition of iron in Fe2O3? (Round to the ones place.)

Make sure to include the unit.

(a)  

103.

What is the percent composition of oxygen in Fe2O3? (Round to the ones place.)

Make sure to include the unit.

(a)  

104.

What is the correct molar mass for Ag2(SO3)3 in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

105.

What is the percent composition of silver in Ag2(SO3)3? (Round to the ones place.)

Make sure to include the unit.

(a)  

106.

What is the percent composition of sulfur in Ag2(SO3)3? (Round to the ones place.)

Make sure to include the unit.

(a)  

107.

What is the correct molar mass for Na2S in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

108.

What is the percent composition of sodium in Na2S? (Round to the ones place.)

Make sure to include the unit.

(a)  

109.

What is the percent composition of sulfur in Na2S? (Round to the ones place.)

Make sure to include the unit.

(a)  

110.

What is the correct molar mass for CaSe in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

111.

What is the percent composition of selenium in CaSe? (Round to the ones place.)

Make sure to include the unit.

(a)  

112.

What is the percent composition of calcium in CaSe? (Round to the ones place.)

Make sure to include the unit.

(a)  

113.

What is the correct molar mass for Sr(NO2)2 in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

114.

What is the percent composition of strontium in Sr(NO2)2? (Round to the ones place.)

Make sure to include the unit.

(a)  

115.

What is the percent composition of nitrogen in Sr(NO2)2? (Round to the ones place.)

Make sure to include the unit.

(a)  

116.

What is the percent composition of oxygen in Sr(NO2)2? (Round to the ones place.)

Make sure to include the unit.

(a)  

117.

What is the correct molar mass for (NH4)2SO4 in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

118.

What is the percent composition of oxygen in (NH4)2SO4? (Round to the ones place.)

Make sure to include the unit.

(a)  

119.

What is the percent composition of sulfur in (NH4)2SO4? (Round to the ones place.)

Make sure to include the unit.

(a)  

120.

What is the percent composition of nitrogen in (NH4)2SO4? (Round to the ones place.)

Make sure to include the unit.

(a)  

121.

What is the percent composition of hydrogen in (NH4)2SO4? (Round to the ones place.)

Make sure to include the unit.

(a)  

122.

What is the correct molar mass for C6H12O6 in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

123.

What is the percent composition of carbon in C6H12O6? (Round to the ones place.)

Make sure to include the unit.

(a)  

124.

What is the percent composition of oxygen in C6H12O6? (Round to the ones place.)

Make sure to include the unit.

(a)  

125.

What is the percent composition of hydrogen in C6H12O6? (Round to the ones place.)

Make sure to include the unit.

(a)  

126.

What is the correct molar mass for C7H18 in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

127.

What is the percent composition of hydrogen in C7H18? (Round to the ones place.)

Make sure to include the unit.

(a)  

128.

What is the percent composition of carbon in C7H18? (Round to the ones place.)

Make sure to include the unit.

(a)  

129.

What is the correct molar mass for BaCl2 in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

130.

What is the percent composition of chlorine in BaCl2? (Round to the ones place.)

Make sure to include the unit.

(a)  

131.

What is the percent composition of barium in BaCl2? (Round to the ones place.)

Make sure to include the unit.

(a)  

132.

What is the correct molar mass for NOF2 in grams per moles? (Round to the hundredths place)

Make sure to include the unit. No spaces.

(a)  

133.

What is the percent composition of nitrogen in NOF2? (Round to the ones place.)

Make sure to include the unit.

(a)  

134.

What is the percent composition of oxygen in NOF2? (Round to the ones place.)

Make sure to include the unit.

(a)  

135.

What is the percent composition of fluorine in NOF2? (Round to the ones place.)

Make sure to include the unit.

(a)  

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