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Semester Review #4: Unit 7 & 8 : Chemical Composition & Rxns

Total questions: 196

Worksheet time: 4hrs 53mins

Name
Class
Date
1.

What elements are in this compound?

a)

Iron

b)

Sulfur

c)

Oxygen

d)

all of the above

2.

How many atoms of Iron are in this formula

a)

2

b)

3

c)

12

d)

1

3.

How many atoms of Sulfur are in the formlua?

a)

2

b)

1

c)

3

d)

4

4.

How many atoms of oxygen are in the formula?

a)

2

b)

1

c)

3

d)

4

e)

12

5.

What is the mass of Sulfur from the periodic table?

(a)  

6.

What is the mass of Oxygen in the periodic table?

(a)  

7.

What is the mass of Iron (Fe) from the periodic table?

(a)  

8.

What is the total mass from Fe in this compound?

a)

55.845

b)

111.70

c)

32.067

d)

15.999

9.

What is the total mass from Sulfur in the pictured formula?

a)

32.06

b)

64.12

c)

96.21

d)

128.24

10.

What is the formula mass of the pictured formula?

a)

191.988

b)

399.91

c)

96.18

d)

111.69

11.
NaCl
a)

58.44

b)

23

c)

35.5

d)

67.6

12.
K2S
a)

110.27

b)

110

c)

78.2

d)

110.2

13.
Cs2SO4
a)

361.89

b)

361.8

c)

313.9

d)

180

14.
Pr(OH)3
a)

191.94

b)

157.1

c)

160.9

d)

191

15.
(NH4)2SO4
a)

132.17

b)

114.1

c)

132

d)

70.1

16.
Copper (II) sulfide
a)

95.62

b)

96

c)

159.3

d)

191.4

17.

Write the formula, calculate the molar mass:

magnesium fluoride

a)

62.31

b)

43.3

c)

73.9

d)

92.9

18.

Write the formula, calculate the molar mass:

copper (II) nitrate

a)

187.57

b)

125.6

c)

188

d)

173.5

19.

Write the formula, calculate the molar mass:

iron (II) phosphate

a)

357.49

b)

358

c)

150.9

d)

206.8

20.

Write the formula, calculate the molar mass:

aluminum nitrate

a)

213.01

b)

89

c)

41

d)

150.9

21.

Write the formula, calculate the molar mass:

magnesium nitride

a)

100.95

b)

101

c)

38.3

d)

116.9

22.

What is the percent by mass of oxygen in MgO? Hint: The attached image is an example of a worked problem other than this one.

a)

20%

b)

40%

c)

50%

d)

60%

23.
What is the percent by mass of magnesium in MgO?
a)
20%
b)
40%
c)
50%
d)
60%
24.
What is the percent by mass of fluorine in CaF2 (gram-formula mass = 78 g/mol)?
a)
24%
b)
49%
c)
51%
d)
65%
25.
What is the percent composition by mass of sulfur in the compound MgSO4 (gram formula mass = 120 g/mol)?
a)
20%
b)
27%
c)
46%
d)
53%
26.
What is the percent composition by mass of oxygen in the compound MgSO4 (gram formula mass = 120 g/mol)?
a)
20%
b)
27%
c)
46%
d)
53%
27.
What is the molar mass of carbon?
a)
6.0 g/mol
b)
12.0 g/mol
c)
22.4 g/mol
d)
6.02 x 1023 g/mol
28.
What is the molar mass of CO2?
a)
22.0 g/mol
b)
28.0 g/mol
c)
44.0 g/mol
d)
56.0 g/mol
29.
A mole of Neon contains
6.02 x 1023 _____.
a)
atoms
b)
formula units
c)
ions
d)
molecules
30.
How many moles are in 3.01 x 1022 atoms of magnesium?
a)
0.0500 moles
b)
1.81 x 1046 moles
c)
5.00 x 1021 moles
d)
5.00 moles
31.

A mole of potassium chloride, an ionic compound, contains 6.02 x 1023 _____.

a)

atoms

b)

formula units

c)

ions

d)

molecules

32.

How many molecules are in 2.00 moles of H2O?

a)

124x1024 molecules of H2O

b)

1.20x1023 molecules of H2O

c)

12.04 x1023 molecules H2O

d)

124

33.
How many atoms are in 1.50 moles of Hg?
a)
9.03x1023 atoms Hg
b)
9.03x1024 atoms Hg
c)
903 atoms of Hg
d)
9.03 atoms of Hg
34.

An Avogadro's number of water molecules is equal to all EXCEPT _________.

a)

1 mole of water molecules

b)

2 moles of Hydrogen atoms and 1 mole of oxygen atoms

c)

18 grams of water

d)

18 molecules of water

35.

88.0 grams of CO2 is about _____________. [Select 2 answers.]

a)

1 mole of CO2

b)

2 moles of CO2

c)

6.02 x 1023 molecules of CO2

d)

two times 6.02 x 1023 molecules of CO2

36.
How many atoms of iodine are in a mole of iodine?
a)
53
b)
63.55g
c)
126.9
d)
6.02 x 1023
37.
We use the periodic table to calculate...
a)
mass
b)
molar mass
c)
moles
38.

Which one has the most molecules or formula units?

a)

1 mole H2O

b)

1 mole Al(OH)3

c)

1 mole NaCl

d)

They are all the same

39.

What is the molar mass of one molecule of Nitrogen N2?

a)

14 amu (atomic mass units)

b)

14 g

c)

28 g

d)

28 amu

40.

The molar mass of an element is the mass of one ____ of the element, with numbers taken from the mass number on the periodic table.

a)

atom

b)

molecule

c)

mole

d)

gram

41.

The molar mass of an element is the mass of one ____ of the element, with numbers taken from the mass number on the periodic table.

a)

atom

b)

molecule

c)

mole

d)

gram

42.

Formula masses & "formula units" are used when referring to ____ and molecular masses & "molecules" are used when referring to _______.

a)

ionic compounds ... covalently-bonded compounds

b)

covalently-bonded compounds .... ionic compounds

c)

atoms .... ionic compounds

d)

covalently-bonded compounds ... atoms

43.

Which of these has the greatest volume at the same temperature & pressure?

a)

1 mole CO2 gas

b)

1 mole of N2O4 gas

c)

1 mole of C3H8 gas

d)

They all have the same volume

44.
Which has more molecules?
a)
1 mole CO2
b)
1 mole of N2O4
c)
1 mole of H2O
d)
They are all the same
45.

The number 6.02 x 1023 is called...

a)

Avogadro's scientific notation

b)

Avogadro's mole

c)

Avogadro's avocado

d)

Avogadro's number

46.

What is the molar mass of NaCl?

a)

58.45 g/mol

b)

1.204 x 1024 atoms

c)

6.02 x 1023 atoms

d)

3.00 x 1024 atoms

47.

We use the periodic table to calculate...

a)

atoms

b)

molar mass

48.

The molar mass of an element is the mass of one ____ of the element.

a)

atom

b)

molecule

c)

mole

d)

gram

49.

What is the molar mass of one mole of N2 molecules ?

a)

6.02 x 1023 molecules

b)

14.007 g

c)

28.014 g

d)

28.014 amu

50.

Avogadro's number of representative particles is 6.02 X 1023 and is equal to one_____.

a)

kilogram

b)

gram

c)

kelvin

d)

mole

51.

What is the molar mass of Carbon?

a)

6 g/mol

b)

12 g/mol

c)

20 g/mol

d)

40 g/mol

52.

What is the mass of one mole of aluminum?

a)

26.981 g/mol

b)

13 g/mol

c)

53.985 g/mol

d)

14 g/mol

53.

Glucose is C6H12O6.

C = 6 x 12.011 = 72.006

H = 12 x 1.008 = 12.096

O = 15.999 x 6 = 95.994


Will Oxygen be the biggest or smallest percentage of the compound?

a)

biggest

b)

smallest

c)

They are all the same

54.

What are the units for molar mass?

a)

squirrels

b)

amu

c)

grams/mole

d)

liters

55.

How many atoms are in 3 moles of aluminum?

a)

Multiply 3 x 26.981 g/mol

b)

Multiply 3 x (6.02 x 1023) = 1.806 x 1024 atoms

c)

13 g/mol

d)

26.981 g/mol

56.

How many atoms are in 3 moles of ANY ELEMENT?

a)

Multiply 3 x 26.981 g/mol

b)

Multiply 3 x (6.02 x 1023) = 1.806 x 1024 atoms

c)

13 g/mol

d)

26.981 g/mol

57.
How many nitrogen atoms in 
Mg(NO3)2
a)
1
b)
2
c)
3
d)
6
58.
How many magnesium atoms in 
Mg(NO3)2
a)
1
b)
2
c)
3
d)
6
59.
How many oxygen atoms in 
Mg(NO3)2
a)
1
b)
2
c)
3
d)
6
60.
How many NO3 polyatomic ions are in 
Mg(NO3)2
a)
1
b)
2
c)
3
d)
6
61.
How many NH4 polyatomic ions are in 
(NH4)3PO4
a)
1
b)
4
c)
3
d)
12
62.
How many nitrogen atoms are in 
(NH4)3PO4
a)
1
b)
4
c)
3
d)
12
63.
How many hydrogen atoms are in 
(NH4)3PO4
a)
1
b)
4
c)
3
d)
12
64.
How many oxygen atoms are in 
(NH4)3PO4
a)
1
b)
4
c)
3
d)
12
65.
How many water molecules are in 
CuSO4⋅5H2O
a)
1
b)
4
c)
5
d)
9
66.
How many oxygen atoms in total are in 
CuSO4⋅5H2O
a)
1
b)
2
c)
5
d)
9
67.

Which are elements are in aluminum nitrate? Check all that apply.

a)

aluminum

b)

nitrate

c)

nitrogen

d)

oxygen

68.

How many atoms of aluminum in an ionic compound, aluminum nitrate?

a)

1

b)

3

c)

6

d)

9

69.

How many oxygen atoms in the compound aluminum nitrate?

a)

1

b)

3

c)

6

d)

9

70.

What is the formula mass of aluminum nitrate?

a)

56.99 amu

b)

117.01 amu

c)

184.99 amu

d)

213.01 amu

71.

What is the molecular mass of glucose, C6H12O6?

a)

29.02 amu

b)

174.12 amu

c)

180.18 amu

d)

200.18 amu

72.

To find formula mass, you add all the ___________ of the compound

a)

Atomic masses

b)

Atomic numbers

c)

Oxidation numbers

d)

Valence electrons

73.
The mass of one mole of substance is called...
a)
molecular mass
b)
mole constant
c)
molar mass
d)
atomic weight
74.

What is the Formula mass of Sulfuric Acid

a)

34 amu

b)

98 amu

c)

97 amu

d)

81 amu

75.
What is the molar mass of table salt (NaCl)?
a)
116.886 g/mol
b)
35.453 g/mol
c)
22.990 g/mol
d)
58.443 g/mol
76.

Sodium hydroxide is used in many industries: in the manufacture of pulp and paper, textiles, drinking water, soaps and detergents, and as a drain cleaner. What is the molar mass of NaOH?

a)

40 amu

b)

38.989 amu

c)

23.998 amu

d)

57.004 amu

77.
What is the mass of one mole of aluminum chloride (remember to determine the correct formula first)?
a)
62.435g
b)
116.399g
c)
133.341g
d)
97.888g
78.

What is the molar mass of Carbon Dioxide?

a)

12

b)

16

c)

32

d)

44

79.

Potassium sulfide is the inorganic compound. Potassium sulfides are formed when black powder is burned and are important intermediates in many pyrotechnic effects, such as senko hanabi and some glitter formulations. What is the molar mass?

a)

110.3 amu

b)

110 amu

c)

78.2 amu

d)

110.2 amu

80.

What is the molar mass of Cs2SO4 ?

a)

361.9

b)

361.8

c)

313.9

d)

180

81.

What will the balanced equation be if you react:

CaCl2 + NaOH

a)

CaCl2 + 2 NaOH --> Ca(OH)2 + 2 NaCl

b)

CaCl2 + 2 NaOH --> CaOH + 2 NaCl

c)

CaCl2 + 2 NaOH --> CaNa2 + 2 ClOH

d)

no reaction

82.

What is the precipitate formed between CaCl2 and NaOH?

a)

CaCl2

b)

NaOH

c)

Ca(OH)2

d)

NaCl

e)

no precipitate is formed

83.

Will the reaction between NaOH and KCl occur?

a)

Yes

b)

No

84.

Mark the indicators of a double displacement reaction.

a)

Water is formed

b)

gas is formed

c)

a precipitate is formed

d)

a phase change occurs

e)

none of these are correct

85.

Will the reaction between Cu(NO3)2 and K2SO4 happen?

a)

yes

b)

no

86.

Which equation is a double displacement reaction?

a)

Cl2 + 2KI --> 2KCl

b)

Fe + O2 --> Fe2O3

c)

CaCO3 --> CO2 + CaO

d)

CaCO3 + 2HCl --> CaCl2 + H2CO3

87.

What are the products for a reaction between KCl and AgNO3

a)

KAg + ClNO3

b)

KCl + AgNO3

c)

KNO3 + AgCl

d)

no reaction occurs

88.

Identify the single replacement reaction

a)

Cl2 + 2KI --> 2 KCl + I2

b)

Fe + O2 --> Fe2O3

c)

CaCO3 --> CaO + CO2

d)

2P + 5O2 --> P2O5

89.

Identify the decomposition reaction

a)

Cl2 + 2KI --> 2 KCl + I2

b)

Fe + O2 --> Fe2O3

c)

CaCO3 --> CaO + CO2

d)

2P + 5O2 --> P2O5

90.

Predict the products:

Mg(NO3)2 + CaCl2 →

a)

Mg(NO3)2 + CaCl2

b)

MgCa + Cl2(NO3)2

c)

Ca(NO3)2 + MgCl2

d)

CaNO3 + MgCl

91.
AB + CD →AD + CB
a)
Double Replacement
b)
Single Replacement
c)
Synthesis
d)
Decomposition
92.
2 AgNO3 + Cu --> Cu(NO3)2 + 2 Ag 
a)
single displacement
b)
double displacement
c)
decomposition
d)
synthesis
93.
A + BC →B + AC
a)
Single Replacement
b)
Decomposition
c)
Double Replacement
d)
Synthesis
94.

Based on the activity series, will this reaction occur?

Au (s) + HCl (aq) →

a)

Yes

b)

No

95.

Which metal is more reactive than calcium?

a)

magnesium

b)

potassium

c)

silver

d)

aluminum

96.
A displacement (single replacement) reaction will occur when...
a)
a more reactive metal displaces a less reactive metal from its compound.
b)
A less reactive metal displaces a more reactive metal from its compound
c)
Displacement only occurs when two of the same metals are reacted 
d)
Displacement reactions will only occur in metals above iron in the reactivity series
97.

Which among the following is(are) double displacement

reaction(s)?

(i) Pb + CuCl2 --> PbCl2 + Cu

(ii) Na2SO4 + BaCl2 --> BaSO4 + 2NaCl

(iii) C + O2 --> CO2

(iv) CH4 + 2O2 --> CO2 + 2H2O

a)

(a) (i) and (iv)

b)

(b) (ii) only

c)

(c) (i) and (ii)

d)

(d) (iii) and (iv)

98.

Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

(i) Displacement reaction

(ii) Precipitation reaction

(iii) Combination reaction

(iv) Double displacement reaction

a)

(a) (i) only

b)

(b) (ii) only

c)

(c) (iv) only

d)

(d) (ii) and (iv)

99.

Determine the two products when Na3PO4 reacts with SnO2.

a)

NaO and SnPO4

b)

Na2O and Sn(PO4)2

c)

Na2O and Sn3PO4

d)

Na2O and Sn3(PO4)4

100.

Determine the products when FeCO3 and AgOH mix.

a)

Fe(OH)3 and Ag2CO3

b)

Fe(OH)2 and Ag2CO3

c)

Fe(OH)2 and AgCO3

d)

Fe(OH)3 and AgCO3

101.

When ammonium dichromate reacts with zinc nitride, what are the products?

a)

zinc nitrate and ammonium chromate

b)

zinc dichromate and ammonium nitrate

c)

zinc chromate and ammonium nitride

d)

zinc dichromate and ammonium nitride

102.

___ Na2CO3 + ___ Ag3P → ___ Na3P + ___ Ag2CO3

a)

3, 2, 1, 3

b)

2, 2, 2, 3

c)

3, 2, 2, 3,

d)

3, 2, 3, 2

103.

Pick the products when KMnO4 reacts with Al2S3 mix.

a)

K2S

b)

AlMnO4

c)

Al(MnO4)3

d)

KS2

104.

Predict the products when sodium chlorate reacts with barium hydroxide.

a)

NaOH and BaClO3

b)

NaOH and Ba(ClO4)2

c)

Na2OH and Ba(ClO3)2

d)

NaOH and Ba(ClO3)2

105.

____ Cu(OH)2 + ____ (NH4)3P → ____ Cu3P2 + ____ NH4OH

a)

1, 1, 1, 3

b)

3, 1, 1, 3

c)

3, 2, 1, 6

d)

3, 1, 1, 6

106.

____ PbS2 + ____ K3PO4 →____ Pb3(PO4)4 + ____ K2S

a)

3, 2, 1, 3

b)

3, 4, 1, 6

c)

3, 4, 1, 2

d)

3, 2, 1, 2

107.

____ (NH4)2SO4 + ____ AgNO3 → ____ NH4NO3 + ____ Ag2SO4

a)

1, 2, 2, 1

b)

1, 1, 1, 1

c)

1, 1, 2, 1

d)

2, 2, 2, 1

108.

Which products result from nickel II chromate reacting with potassium sulfate?

a)

NiSO4

b)

K2Cr2O7

c)

Ni2SO4

d)

K2CrO4

109.

Predict the products:

NaOH + Fe(NO3)3 →

a)

NaFe + OH(NO3)3

b)

Na(NO3)2 + Fe(OH)3

c)

NaOH + Fe(NO3)3

d)

NaNO3 + Fe(OH)3

110.

Predict the products:

KOH + H3PO4 →

a)

K3PO4 + HOH

b)

KH3 + OHPO4

c)

KOH + H3PO4

d)

KPO4 + H3OH

111.

Predict the products:

Mg(NO3)2 + CaCl2 →

a)

Mg(NO3)2 + CaCl2

b)

MgCa + Cl2(NO3)2

c)

Ca(NO3)2 + MgCl2

d)

CaNO3 + MgCl

112.

Predict the products

Ba(NO3)2 + K2CO3 →

a)

BaNO3 + KCO3

b)

CO3NO3 + KBa

c)

BaCO3 + K2NO3

d)

BaCO3 + KNO3

113.

____ Pb(NO3)2 + ____ Ca3P2 → ____ Pb3P2 + ____ Ca(NO3)2

a)

1, 1, 1, 1

b)

3, 3, 1, 3

c)

3, 1, 1, 3

d)

3, 1, 1, 1

114.

What are the correct products when fluorine gas mixes with ammonium chloride?

a)

F2 + NH4Cl

b)

Cl2 + NH4F2

c)

Cl + NH4F

d)

Cl2 + NH4F

115.

Balance: ____ Al + ____ ZnCO3 → ____ Zn + ____ Al2(CO3)3

a)

1, 1, 2, 2

b)

2, 3, 3, 1

c)

2, 1, 1, 1

d)

2, 3, 1, 1

116.

What are the products when copper II chloride reacts with magnesium metal?

a)

Cu + MgCl2

b)

Cu2 + MgCl2

c)

Cu + MgBr2

d)

Cu + MgCl

117.

Balance: ____ Al2(SO4)3 + ____ Sn → ____ Al + ____ Sn(SO4)2

a)

1, 1, 1, 1

b)

1, 3, 2, 1

c)

2, 3, 4, 3

d)

2, 2, 2, 3

118.

Fe + Ag2CrO4 react. What are the products?

a)

Ag + Fe2CrO4

b)

Ag + Fe(CrO4)3

c)

Ag + FeCrO4

d)

Ag + Fe3CrO4

119.
4Si + S8 --> 2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
120.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single diplacement
d)
Double displacement
121.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Double displacement
122.
2Pb(NO3)2 --> 2PbO + 4NO2 + O2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
123.
3Mg + N2 --> Mg3N2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
124.
2NO2 --> N2 + 2O2
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Combustion
125.
P4 + 3O2 --> 2P2O3
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
126.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
127.
Which reaction type is the following: C5H10O4 + O2 --> CO2 + H2O
a)
Decomposition
b)
Single Replacement
c)
Combustion
d)
Double Replacement
128.
Which of the following is the general formula for a decomposition reaction?
a)
A + B  → AB
b)
AB → A + B
c)
AB + C → AC + B
d)
AB + CD → AC + BD
129.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
130.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
131.
Balance this equation:
 __Li + __Cl2 -> __LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li +  Cl2 -> 2LiCl
132.
C4H12 + O2 --> CO2 + H2O
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
133.
H2SO4 + Fe -->H2 + FeSO4
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
134.
PbCl2 + AgNO3 ---> Pb(NO3)2 + AgCl 
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
135.
NH3 + HCl ---> NH4Cl 
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
136.
Which chemical reaction switches 2 elements?
a)
Double Replacement
b)
Single Replacement
c)
Combustion
d)
Decomposition
137.
Which chemical reaction takes place when 2 substances react to form a single product?
a)
Decomposition
b)
Double Replacement
c)
Single Replacement
d)
Synthesis
138.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
139.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
140.
a substance that is formed as the result of a chemical reaction
a)
Product 
b)
Reactant
c)
Starters
d)
Enders
141.
an atom or molecule which has gained or lost one or more of its valence electrons
a)
Covalent Bond
b)
Chemical Formula
c)
Ion
d)
Compound
142.
a substance formed when two or more elements are chemically bonded together
a)
Element Soup
b)
Pure Element
c)
Ion
d)
Compound
143.
tells us the number of atoms of each element in a compound
a)
Coeffecient
b)
Exponent
c)
Chemical Formula
d)
Calculator
144.
both elements in a compound share a certain number of electrons
a)
Share Electrons
b)
Transfer Electrons
145.
one element loses an electron to another
a)
Share Electrons
b)
Transfer Electrons
146.
the symbolic representation of a chemical reaction
a)
Long Hand
b)
Short Hand
c)
Electron Configuration
d)
Chemical Equation
147.
type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound
a)
Double Displacement
b)
Single Displacement
c)
Synthesis
d)
Decomposition
148.
type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products
a)
Double Displacement
b)
Single Displacement
c)
Synthesis
d)
Decomposition
149.
type of reaction in which two or more elements combine to form a more complex compound
a)
Double Displacement
b)
Single Displacement
c)
Synthesis
d)
Decomposition
150.
type of reaction in which a compound is broken down into its simple elements
a)
Double Displacement
b)
Single Displacement
c)
Synthesis
d)
Decomposition
151.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
152.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
153.

The process by which one or more substances change to produce one or more different substances

a)

Chemical Process

b)

Reactant

c)

Chemical Reaction

154.
In the equation,          2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
155.
What are Chemical Reactions?
a)
It's when you mix substances.
b)
a process in which atoms rearrange to form new substances
c)
When something bubbles.
d)
letter and numbers showing the types and number of atoms
156.

6CO2+ 6H2O → C6H12O6 + 6O26CO_2+\ 6H_2O\ \rightarrow\ C_6H_{12}O_{6\ }+\ 6O_2  

The carbon atoms are balanced with ____ on each side of the reaction.

a)

1

b)

6

c)

2

157.

Determined whether the following equation is balanced or unbalanced. Ag + O2 ---> 2Ag2O

a)

Balanced

b)

Unbalanced

158.

Determine whether the following equations is balanced or unbalanced. H4 + O2 ---> 2H2O

a)

Balanced

b)

Unbalanced

159.

Determine whether the following equation is balanced or unbalanced. H2 + Br2 ---> 2HBr

a)

Balanced

b)

Unbalanced

160.

Determine whether the following equation is balanced or unbalanced. 2Fe + 3Cl2 ---> FeCl3

a)

Balanced

b)

Unbalanced

161.

In order for an equation to be balanced, there must be ...

a)

an equal amount of atoms on both sides

b)

a greater mass on the product side

c)

a greater mass on the reactant side

d)

elements with the same atomic # on both sides

162.
In this image, what are the information in red is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
d)
Coefficient
163.
In this image, what are the information to the right of the arrow (in black) is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
164.
The law of conservation of mass states that....
a)
Matter can be made
b)
Matter can be destroyed
c)
Matter can neither be made or destroyed
d)
Matter can evaporate
165.
Is the following equation balanced or unbalanced?
Fe + S --> FeS
a)
balanced
b)
unbalanced
166.
Is this balanced?...
Al + O2 --> 2Al2O3
a)
Yes!
b)
NO!
167.

Determine whether the following equation is balanced or unbalanced. 4P +5O2 ---> 2P2O5

a)

Balanced

b)

Unbalanced

168.
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
a)
2
b)
6
c)
1
d)
4
169.

This change is a

a)

chemical reaction

b)

physical change

c)

musical change

d)

Ice Ice baby

170.

A precipitate is a ___________ that forms when 2 liquids react together.

a)

solid

b)

liquid

c)

gas

d)

plasma

171.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
172.

Which is not a clue that could indicate a chemical change?

a)

Change in color

b)

Change in shape

c)

Change in energy

d)

Change in odor

173.

Match the following

a)
1.

Reversible reaction

b)

(aq)

2.

dissolved in water

c)

(g)

3.

gas

d)

(l)

4.

liquid

e)
5.

yeilds (becomes)

174.

Translate the word equation below:

Nitrogen reacts with Hydrogen to form Ammonia (NH3).

a)

N  → H + NH3N\ \ \rightarrow\ H\ +\ NH_3

b)

N2 + H2 → NH3N_2\ +\ H_2\ \rightarrow\ NH_3

c)

N + H → NH3N\ +\ H\ \rightarrow\ NH_3

d)

N2 → H2 + NH3N_2\ \rightarrow\ H_2\ +\ NH_3

175.

Translate the word equation below.

Hydrogen and Carbon Dioxide react to form Carbonic Acid (H2CO3).

a)

H + CO2 → H2CO3H\ +\ CO_2\ \rightarrow\ H_2CO_3

b)

H → CO2 + H2CO3H\ \rightarrow\ CO_2\ +\ H_2CO_{3_{ }}

c)

H2 + CO2 → H2CO3H_2\ +\ CO_2\ \rightarrow\ H_2CO_3

d)

H2 → CO2 + H2CO3H_2\ \rightarrow\ CO_2\ +\ H_2CO_3

176.

Translate the word equation below.

Carbon Dioxide and Hydrogen react to form Methane (CH4) and Water

a)

CO2 + H2O → CH4 +H2 CO_{2_{\ }}+\ H_2O\ \rightarrow\ CH_4\ +H_2\

b)

CO2 → H2 + CH4 + H2OCO_2\ \rightarrow\ H_2\ +\ CH_4\ +\ H_2O

c)

CO2  + H2 + CH4  → H2OCO_2\ \ +\ H_2\ +\ CH_4\ \ \rightarrow\ H_2O

d)

CO2  + H2 → CH4 + H2OCO_2\ \ +\ H_2\ \rightarrow\ CH_4\ +\ H_2O

177.

Translate the word equation below.

Sulfur Trioxide reacts with Water to form Sulfuric Acid (H2SO4).

a)

SO3 + H2O → H2SO4SO_3\ +\ H_2O\ \rightarrow\ H_2SO_4

b)

SO3 → H2O + H2SO4SO_3\ \rightarrow\ H_2O\ +\ H_2SO_4

c)

SO2 + H2O → H2SO4SO_2\ +\ H_2O\ \rightarrow\ H_2SO_4

d)

SO → H2O + H2SO4SO\ \rightarrow\ H_2O\ +\ H_2SO_4

178.

Translate the word equation below.

Aluminum and Hydrochloric Acid (HCl) react to form Aluminum Chloride and Hydrogen

a)

Al + HCl → AlCl3 → H2Al\ +\ HCl\ \rightarrow\ AlCl_3\ \rightarrow\ H_2

b)

Al + HCl → AlCl + H2Al\ +\ HCl\ \rightarrow\ AlCl\ +\ H_2

c)

Al + HCl → AlCl3 + H2Al\ +\ HCl\ \rightarrow\ AlCl_3\ +\ H_2

d)

Al + HCl → AlCl + HAl\ +\ HCl\ \rightarrow\ AlCl\ +\ H

179.

Translate the word equation below.

Carbon Dioxide and Water react to form Glucose (C6H12O6) and Oxygen.

a)

CO2 + H2O → C6H12O6 + O2CO_2\ +\ H_2O\ \rightarrow\ C_6H_{12}O_6\ +\ O_2

b)

CO2 + H2O + C6H12O6 → O2CO_2\ +\ H_2O\ +\ C_6H_{12}O_6\ \rightarrow\ O_2

c)

CO2 + H2O → C6H12O6 + OCO_2\ +\ H_2O\ \rightarrow\ C_6H_{12}O_6\ +\ O_{ }

d)

CO2 → H2O + C6H12O6 + O2CO_2\ \rightarrow\ H_2O\ +\ C_6H_{12}O_6\ +\ O_2

180.

The law of conservation of mass states

a)

chemical reactions create new atoms

b)

atoms cannot be created or destroyed

c)

reactants vanish once a reaction takes place

d)

products appear when a reaction takes place

181.
Which of the following symbols is not a correct indication of the phase of a substance in a reaction? 
a)
(s)=solid
b)
(g)=grams
c)
(l)=liquid
d)
(aq)= aqueous
182.

Which is the correct chemical equation for the following: Solid Zn reacts with silver (I) chloride to produce Zinc (II) chloride and silver metal

a)

Zn + AgCl → ZnCl2 + Ag

b)

ZnCl2 + Ag → Zn + AgCl

c)

ZnCl2 + Ag2 → Zn + AgCl

d)

Zn2Cl + Ag → Zn + AgCl

183.
Which is NOT a diatomic molecule?
a)
Fluorine
b)
Nitrogen
c)
Boron
d)
Bromine
184.

Magnesium can be burned in oxygen to produce solid magnesium oxide.

a)

Mg(s) + O2(g)→ MgO(s)

b)

Mg(s) + O(g) → MgO(s)

c)

Mg(s) + CO2(g) → MgO(s) + C(s)

d)

Mg(s) + O2(g) → Mg2O2(s)

185.

Which compounds are the PRODUCTS of this reaction?

a)

CO2 + H2O

b)

C6H12O6 + O2

c)

C6H12O6 + CO2

d)

H2O + O2

186.
Sodium reacts with chlorine to produce sodium chloride.
a)
NaCl(s) → Cl(g) + Na(s)
b)
Na(s) + CO2(g) → NaCO2(s)
c)
2Na(s) + Cl2(g) → 2NaCl(s)
d)
Na(s) + Cl(g) → NaCl
187.
Which is the correct formula for the compound Chromium (II) Nitrate?
a)
Cr2NO3
b)
(Cr)2NO3
c)
CrNO2
d)
Cr(NO3)2
188.
Which is the correct formula for the compound formed between beryllium and nitrogen?
a)
BeN
b)
Be3N
c)
Be3N2
d)
Be2N3
189.
Identify the reactant(s) and product(s) of the reaction.
a)
All three are reactants and none are products.
b)
Hydrogen and water are the reactants, and oxygen is the product.
c)
Water and oxygen are the reactants, and hydrogen is the product.
d)
Hydrogen and oxygen are the reactants, and water is the product.
190.

Which of the following unbalanced chemical equations produced a gas?

a)

Al (s) + O2 (g) → Al2O3 (s)

b)

H2 (g) + O2 (g) → H2O (l)

c)

C (s) + O2 (g) → CO2 (g)

d)

Na (s) + LiBr (aq) → NaBr (aq) + Li (s)

191.

How would you write the reactants to represent the chemical reaction between fluorine gas and calcium metal?

a)

F (g) + Ca (m)

b)

F2 (g) + Ca (m)

c)

F (g) + Ca (s)

d)

F2 (g) + Ca (s)

192.

The large number in front of a chemical formula in a balanced equation is called a...

a)

coefficient

b)

subscript

c)

superscript

d)

charge

193.

Which letter represents "yields" or "produces" in the image?

a)

a

b)

b

c)

c

d)

d

194.

Which letter is a coefficient in the image?

a)

a

b)

b

c)

c

d)

d

195.

Which letter is a subscript in the image?

a)

a

b)

b

c)

c

d)

d

196.

Which letter is a product in the image?

a)

a

b)

b

c)

c

d)

d

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