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Unit 9 - Chemical Reactions Study Guide

Total questions: 156

Worksheet time: 6hrs 55mins

Name
Class
Date
1.

Fill in the blanks with coefficient:

PCl5+_ H2O→_ HCl+H3PO4

a)

4, 5

b)

1, 6

c)

3, 8

d)

2,2

2.

Which equation is balanced?

a)

PbO2 + 2H2--> H2SO4

b)

SO2 + H20 --> H2SO4

c)

2Na + 2H2O --> 2NaOH + H2

d)

2Na + 2H2O --> 2NaOH + H

3.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
4.
Balance this equation
_Zn+_HCl-->_ZnCl2 +_H2
a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
5.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
6.
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
7.
The blue numbers in the image below represent ________
a)
Charges
b)
coefficients
c)
subscripts
d)
none of the answers are correct
8.
Number of H in 3(NH₄)₂CrO₄
a)
4
b)
6
c)
8
d)
24
9.
Balance this equation:
P4+O2  -->  P2O3
a)
3 P4+ O2 --> 2 P2O3
b)
 P4+ O2 --> 2 P2O3
c)
 P4+ 3 O2 --> 2 P2O3
d)
 P4+ 2 O2 --> 3 P2O3
10.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
11.

What is the left part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical equation

12.

What is the right part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical Equation

13.

What is the total number of atoms present in 5Na3PO4?

a)

5

b)

55

c)

40

d)

8

14.

How many Mn atoms are found in the following compound?

2MnO4

a)

1

b)

2

c)

4

d)

8

15.

What is the little number after an element in a chemical equation called?

Example: H2

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

16.

Is the following equation balanced?

Al + O2 ---> 2Al2O3

a)

YES

b)

NO

17.

What is the number before a chemical formula called?

Example: 2H2 + O2 ---> 2H2O

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

18.

Which of the following equations are correctly balanced?

a)

12CO2 + H2O ---> C6H12O6 + O2

b)

CO2 + H2O ---> 3C6H12O6 + O2

c)

CO2 + 9H2O ---> C6H12O6 + O2

d)

6CO2 + 6H2O ---> C6H12O6 + 6O2

19.

Balance this equation:

H2 + Cl2 ---> HCl

a)

It is balanced.

b)

H2 + Cl2 ---> 2HCl

c)

3H2 + Cl2 ---> 6HCl

d)

H2 + 3Cl2 ---> 6HCl

20.

Balance this equation:

HgO ---> 2Hg + O2

a)

It is balanced.

b)

2HgO ---> 2Hg + O2

c)

2HgO ---> Hg + O2

d)

HgO ---> Hg + 2O2

21.

Complete the sentence.


During a chemical reaction, atoms ________.

a)

can appear

b)

can disappear

c)

get rearranged

d)

stop moving and vibrating

22.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number in front of a chemical formula.
c)
The number in between the chemical symbols.
d)
The number behind a chemical formula.
23.

What is the Law of Conservation of Mass?

a)

It states that matter cannot be created or destroyed.

b)

It states that energy cannot be created or destroyed.

c)

It states that matter can be created or destroyed.

d)

It states that sound can be created or destroyed.

24.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
25.

What are the numbers that you CANNOT change in a chemical equation? 

a)
Coefficient
b)
Products
c)
Reactants
d)

Subscripts

26.

Balance the following equation:

___ H2+ ___ O2→___ H2O

a)

1, 1, 3

b)

2, 2, 2

c)

1, 2, 1

d)

2,1, 2

27.

What is the right ratio of chemicals for the balanced chemical equation?__Na + __H2O --> __NaOH + __H2

a)
2,2 --> 2,1
b)
4,4 --> 4,1
c)
1,2 --> 2,4
d)
1,2 --> 2,1
28.

What is the right ratio of chemicals for the balanced chemical equation?

__Ca + __H2O --> __Ca(OH)2 + __H2

a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 2,4
d)
1,2 --> 2,1
29.

What is the right ratio of chemicals for the balanced chemical equation?

__CO + __Fe2O3--> __Fe + __CO2

a)
3,1 --> 2,3
b)
3,2 --> 1,1
c)
3,2 --> 2,4
d)
3,2 --> 2,1
30.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CH4 + __O2 --> __CO2+ __H2O
a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
31.

What is the right ratio of chemicals for the balanced chemical equation?

__AgNO3 + __H2S --> __Ag2S+ __HNO3

a)
2,1 --> 1,2
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
32.

What is the right ratio of chemicals for the balanced chemical equation?

__H2 + __S --> __H2S

a)
1,1 --> 1
b)
2,2 --> 2
c)
1,2 --> 1
d)
1,2 --> 2
33.

What is the right ratio of chemicals for the balanced chemical equation?

__H2SO3 + __KOH--> __H2O+ __K2SO3

a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
34.

What is the right ratio of chemicals for the balanced chemical equation?

__MnO2 + __HCl --> __MnCl2 + __H2O __Cl2

a)
4,1 --> 2,1,2
b)
1,2 --> 1,1,4
c)
1,4 --> 1,2,1
d)
1,4 --> 2,2,1
35.

What is the right ratio of chemicals for the balanced chemical equation?

__FeCl3 + __Ca(OH)2 --> __Fe(OH)3 + __CaCl2

a)
4,3--> 2,1
b)
3,2 --> 3,1
c)
2,3 --> 2,2
d)
2,3 --> 2,3
36.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Na + __H2O --> __NaOH + __H2
a)
2,2 --> 2,1
b)
4,4 --> 4,1
c)
1,2 --> 2,4
d)
1,2 --> 2,1
37.

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?

__Ca + __H2O --> __Ca(OH)2 + __H2

a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 2,4
d)
1,2 --> 2,1
38.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CO + __Fe2O3--> __Fe + __CO2
a)
3,1 --> 2,3
b)
3,2 --> 1,1
c)
3,2 --> 2,4
d)
3,2 --> 2,1
39.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CH4 + __O2 --> __CO2+ __H2O
a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
40.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__AgNO3 + __H2S --> __Ag2S+ __HNO3
a)
2,1 --> 1,2
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
41.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H2 + __S --> __H2S
a)
1,1 --> 1
b)
2,2 --> 2
c)
1,2 --> 1
d)
1,2 --> 2
42.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H2SO3 + __KOH--> __H2O+ __K2SO3
a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
43.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Al + __O2--> __Al2O3
a)
4,1 --> 2
b)
4,3 --> 4
c)
3,4 --> 1
d)
4,3 --> 2
44.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__MnO2 + __HCl --> __MnCl2 + __H2O __Cl2
a)
4,1 --> 2,1,2
b)
1,2 --> 1,1,4
c)
1,4 --> 1,2,1
d)
1,4 --> 2,2,1
45.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__FeCl3 + __Ca(OH)2 --> __Fe(OH)3 + __CaCl2
a)
4,3--> 2,1
b)
3,2 --> 3,1
c)
2,3 --> 2,2
d)
2,3 --> 2,3
46.
What are the products of this reaction?
Cu+ AgNO3--> 
a)
Cu(NO3)2+Ag
b)
CuNO3 + Ag
c)
CuAg+NO3
d)
Cu+ AgNO3
47.
Predict the products for the this reaction:
K + HCl --> 
a)
KCl + H2
b)
KHCl 
c)
KH + Cl2
d)
KCl + H
48.
Which of the following equations represents the balanced synthesis reaction of iron (III) and oxygen?
a)
Fe + 3 O2 → Fe2O3
b)
3 Fe + 3 O2 → 2 Fe2O3
c)
2 Fe + O2 → Fe2O3
d)
4 Fe + 3 O2 → 2 Fe2O3
49.
If an element is diatomic it should have a subscript of___
a)
2, always
b)
2, only when it is by itself
c)
it shouldn't have a subscript, it should have a coefficent
50.
What kind of reaction is this:
4Fe  +  3O2 →   2Fe2O3 
a)
Synthesis
b)
Decomposition
c)
Single Replacement 
d)
Double Replacement
51.
What kind of reaction is this:
2H2O2 →2 H2O + O2
a)
Synthesis
b)
Decomposition
c)
Single Replacement 
d)
Combustion
52.
What kind of reaction is this:
Fe + CuSO4 -> Cu + FeSO4
a)
Double Replacement
b)
Decompostion
c)
Single Replacement
d)
Combustion
53.
What is the product when rubidium and oxygen gas react?
a)
RbO2
b)
Rb2O
c)
RbO
d)
Rb2O2
54.
 Predict the product(s):  H2O -->
a)
H and O
b)
H2 and O2
c)
H and OH
55.
Which of the following are PRODUCTS?
H2O + CO2 → HCO + HO
a)
H2O and CO2
b)
HCO and HO
c)
H2O ONLY
d)
HCO ONLY
56.
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
57.
Classify
Zn + H2S → ZnS + H2
a)
synthesis
b)
combustion
c)
single replacement
d)
double replacement
58.
Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
a)
double replacement 
b)
decomposition 
c)
combustion 
d)
single replacement
59.

Predict the product of the following synthesis reaction.

Ca + N2 -->

a)

CaN2

b)

CaN

c)

Ca3N2

d)

CaNNot

60.

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

61.

What are the products for this combustion reaction:

C2H4 + 2 O2 -->

a)

C2O2 + H4

b)

CO2 + HOH

c)

CO + H

d)

CO2 + H2O

62.

Predict the products for the this Double Replacement reaction:

AgNO3 + KCl →

a)

AgCl + KNO3

b)

AgK + ClNO3

c)

KAg + NO3Cl

d)

AgCl + 3 KNO

63.

Predict the products of the following reaction. No need to balance. Iron (III) is the form used in this equation.


Fe + O2 →

a)

Fe2O3

b)

FeO

c)

Fe3O2

d)

Fe3O

64.

Predict the type of the following reaction.


3KOH + H3PO4 -->

a)

Synthesis

b)

Decomposition

c)

Single displacement

d)

Double displacement

65.

Predict the products of the following reaction. No need to balance.


F2 + KBr →

a)

FBr + K

b)

KF + Br

c)

KF2 + Br2

d)

KF + Br2

66.

Predict the Products

CuCl2 + H2S ----->

(a)  

67.

Predict the products

NaOH + HClO4 --->

(a)  

68.

Predict the products

HCl + Zn --->

(a)  

69.

Predict the products

Na + MgCl2 --->

(a)  

70.

Predict the products

CaCl2 + K2CO3 --->

(a)  

71.

Predict the products

Mg + FeSO4 --->

(a)  

72.

Predict the products

NaOH + HCl --->

(a)  

73.

Predict the products

FeCl2 + KOH --->

(a)  

74.

Predict the products

H2SO4 + KOH --->

(a)  

75.

Predict the products

Al2(SO4)3 + Pb(NO3)2 --->

(a)  

76.

MgI2 + AgClO3 --> ___________ + ___________

(a)  

77.
What are the products of this reaction?
Cu+ AgNO3--> 
a)
Cu(NO3)2+Ag
b)
CuNO3 + Ag
c)
CuAg+NO3
d)
Cu+ AgNO3
78.
Predict the products for the this reaction:
K + HCl --> 
a)
KCl + H2
b)
KHCl 
c)
KH + Cl2
d)
KCl + H
79.

Predict the product(s) of this reaction (don't worry about balancing):

SrI2 +Br2→

a)

Sr + I2Br2

b)

SrBr + I2

c)

SrBr2 + I2

d)

Sr + IBr2

80.
Predict the product(s) of this reaction (Don't worry about balancing) 
Pb(NO3)2  +  KI →
a)
PbK +  I NO3
b)
not possible
c)
PbI2  +  KNO3
d)
PbI  + KNO3
81.

What are the products of this reaction?

(Cu has an oxidation number of +2 here)

Cu + AgNO3 →

a)

Cu(NO3)2 + Ag

b)

CuNO3 + Ag

c)

CuAg + NO3

d)

Cu + AgNO3

82.
4Si + S8 --> 2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
83.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single diplacement
d)
Double displacement
84.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Double displacement
85.
2Pb(NO3)2 --> 2PbO + 4NO2 + O2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
86.
3Mg + N2 --> Mg3N2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
87.
2NO2 --> N2 + 2O2
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Combustion
88.
P4 + 3O2 --> 2P2O3
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
89.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
90.
Which reaction type is the following: C5H10O4 + O2 --> CO2 + H2O
a)
Decomposition
b)
Single Replacement
c)
Combustion
d)
Double Replacement
91.
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
92.
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
93.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
94.
Balance this equation:
 __Li + __Cl2 -> __LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li +  Cl2 -> 2LiCl
95.
C4H12 + O2 --> CO2 + H2O
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
96.
H2SO4 + Fe -->H2 + FeSO4
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
97.
PbCl2 + AgNO3 ---> Pb(NO3)2 + AgCl 
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
98.
NH3 + HCl ---> NH4Cl 
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
99.
Which chemical reaction switches 2 elements?
a)
Double Replacement
b)
Single Replacement
c)
Combustion
d)
Decomposition
100.
Which chemical reaction takes place when 2 substances react to form a single product?
a)
Decomposition
b)
Double Replacement
c)
Single Replacement
d)
Synthesis
101.
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
102.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

103.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

104.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

105.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

106.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

107.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

108.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

109.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

110.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

111.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

112.

Choose the most correct sentence to describe the following reaction: Fe(s) + O2(g) --> Fe2O3(s)

a)

An iron solution forms oxygen gas and solid iron oxide.

b)

Solid iron and oxygen gas react to form solid iron(III) oxide.

c)

Solid iron and oxygen make iron oxide.

d)

Iron and dioxygen gas produce solid iron(II) oxide.

113.

Choose the most correct sentence to describe the following reaction: Al2O3(s) --heat--> Al(s) + O2(g)

a)

Aluminum oxide thermally decomposes into aluminum and oxygen.

b)

Aluminum reacts with dioxygen to make aluminum oxide.

c)

Solid aluminum(II) oxygen make gas aluminum and oxygen.

d)

Solid aluminum oxide produces solid aluminum metal and oxygen gas when heated.

114.

"Solid zinc oxide is produced by combining zinc powder with oxygen gas." What is/are the reactant(s)?

a)

zinc oxide

b)

zinc

c)

oxygen

115.

"Solid zinc oxide is produced by combining zinc powder with oxygen gas." What is the correct formula and physical state for the zinc and oxygen reactants?

a)

Zn (s) + O (g)

b)

Zn (s) + O2 (g)

c)

ZnO (g)

d)

Zn (p) + O2 (g)

116.

What are the 7 elements are always found as diatomics (two bonded together, like X2) when they are in their pure form (not part of a compound)?

a)

Br, I, N, Cl, H, O, F

b)

B, I, N, C, H, O, F

c)

B, R, O, F, In, C, H

d)

Br, I, Ni, C, Ho, F

117.

Identify the product(s) in this word equation

a)

Sodium

b)

Sodium chloride

c)

Sodium and Chlorine

d)

Sodium and sodium chloride

118.

Carbon monoxide gas and oxygen gas react to form carbon dioxide gas

a)

CO2 (g) + O (g) →\rightarrow  CO2 (g)

b)

CO2 (g) + O (g) →\rightarrow  CO2 (l)

c)

CO (g) + O2 (g) →\rightarrow  CO2 (g)

d)

CO2 (g) + O2 (g) →\rightarrow  CO (g)

119.

Liquid benzene (C6H6) reacts with oxygen gas to form carbon dioxide gas and water.

a)

C6H6 (l) + O (g) →\rightarrow  CO2 (g) + H2O (l)

b)

C6H6 (l) + O2 (g) →\rightarrow  CO2 (g) + H2O (g)

c)

C6H6 (l) + O2 (g) →\rightarrow  CO2 (g) + H2O (l)

d)

C6H6 (l) + O (g) →\rightarrow  C2O (g) + H2O (l)

120.

Choose the most correct sentence to describe the following reaction: NH3(g) + O2(g) --> NO(g) + H2O(g)

a)

Ammonia and oxygen form nitrogen and water

b)

Nitrogen trihydride and oxygen gases react to form nitrogen monoxide gas and water vapor.

c)

Nitrogen hydride gas and dioxygen gas produce nitrogen oxide and water when mixed.

d)

Nitrogen trihydride and oxygen react to make nitrogen oxide and dihydrogen monoxide.

121.

What are the seven diatomic elements?

a)

H2, Cl2, Br2, O2, N2, I2, F2

b)

H2, Cl2, I2, F2, Hg2, Br2, Fe2

c)

H2, Cu2, Ni2, B2, O2, I2, Fe2

122.
The formula below represents the most common carbohydrate known as glucose. Which information can be determined from the chemical formula?
C6H12O6
a)
The structural arrangement of the atoms in a glucose molecule
b)
The color of a glucose molecule
c)
The size of a glucose molecule
d)
The number of atoms of each element in a glucose molecule
123.
The reactants are on the left side of the chemical equation.
a)
True
b)
False
124.

How many Carbons are present on the reactant side?

a)

1

b)

2

c)

3

d)

4

125.

What does the Law of Conservation of Mass state

a)

The mass of the reactants must be close to the mass of the products

b)

The atoms in the reactants will be different than the atoms in the products

c)

Matter is neither created or destroyed, therefore the number of atoms in reactants will be identical to the number of atoms in the products

d)

Atoms of the reactants are not rearranged, therefore the number of atoms will be different.

126.

Substance that changes the rate of a chemical reaction without being consumed in the reaction

a)

bonding

b)

catalyst

c)

chemical reaction

d)

activation energy

127.

The law of conservation of mass states that matter ___________________.

a)

cannot enter into chemical reactions

b)

cannot be created or destroyed

c)

cannot form different substances

d)

cannot be modeled

128.

What is the coefficient in the formula?

a)

2

b)

N

c)

H

d)

3

129.

What is the subscript in the formula?

a)

2

b)

N

c)

H

d)

3

130.

What does the arrow in a chemical equation represent?

a)

created

b)

makes

c)

yields

d)

destroys

131.

Choose the most correct sentence to describe the following reaction: Al2O3(s) --heat--> Al(s) + O2(g)

a)

Aluminum oxide thermally decomposes into aluminum and oxygen.

b)

Aluminum reacts with dioxygen to make aluminum oxide.

c)

Solid aluminum(II) oxygen make gas aluminum and oxygen.

d)

Solid aluminum oxide produces solid aluminum metal and oxygen gas when heated.

132.

If an element is diatomic it should have a subscript of___

a)

1, always

b)

2, only when it is an element

c)

it shouldn't have a subscript, it should have a coefficent

d)

2, when bonded in a compound

133.

Predict the products of this synthesis reaction: H2 + Cl2 →

a)

HCl

b)

H2Cl2

c)

H2Cl

d)

HCl2

134.

What type of reaction is this?

2 C6H14 + 19 O2 → 12 CO2 + 14 H2O

a)

Single Replacement

b)

Double Replacement

c)

Combustion

d)

Decomposition

135.

Predict the product of this synthesis reaction:

Al + S₈ →

a)

AlS

b)

AlS8

c)

Al2S

d)

Al2S3

136.

Predict the products for the decomposition of aluminum oxide, Al2O3 →

a)

Al + O2

b)

O + Al2

c)

Al2 + O3

d)

Al + O

137.

What are the products of this reaction:

C2H4 + O2 →

a)

C2O2 + H4

b)

CO2 + H2 + O2

c)

CO + H

d)

CO2 + H2O

138.

Predict the products of this single replacement reaction: Na + H2O →

a)

NaO + H2

b)

NaOH + H2

c)

NaH + O2

d)

ONaH

139.

What is the correct way of representing hydrogen gas alone, in a reaction?

a)

2H

b)

H

c)

H2

140.

What is the missing product?


RS ➔ R + __________

a)

RS

b)

S

c)

T

141.

Based on the information provided, which type of reaction is this?


R + S ➔ _________

a)

Double replacement

b)

Single replacement

c)

Synthesis

d)

Decomposition

142.

What is the missing product?


R + S ➔ _________

a)

R

b)

S

c)

RS

143.

Based on the information provided, what type of reaction is this?


Fe + O2 ➔ ___________

a)

Double replacement

b)

Single replacement

c)

Synthesis

d)

Decomposition

144.

What would the missing product be?


Fe + O2 ➔ ___________

a)

Fe2O2

b)

2 FeO

c)

2 FeOH

145.

Based on the information provided, what type of reaction is this?


2 NO2 ➔ O2 + _________

a)

Double replacement

b)

Single replacement

c)

Synthesis

d)

Decomposition

146.

What is the missing product?


2 NO2 ➔ O2 + _________

a)

N2

b)

N

c)

NO

147.

Predict the products of the following:

Li + NaBr --->

a)

Li will replace Na

b)

Li will replace Br

148.

Predict the products of this reaction:

Mg + HCl →

a)

MgCl2 + H2

b)

MgCl2 + H

c)

MgCl + H2

149.

Predict the products of the reaction (nonmetal repalces nonmetal):

Br2 + KI

a)

KBr + I2

b)

Br2I + K

c)

KBr2 + I2

150.

What are the products of the reaction: Mg + CuSO4

a)

Cu + MgSO4

b)

CuMg + SO4

c)

Cu + Mg(SO4)2

151.

Predict the products of the following reaction:  Ca + MgCl2

a)

CaMg

b)

CaCl2

152.

Predict the products of the following reaction: Al + ZnCl2  

a)

Zn and Cl3Al

b)

Zn and AlCl3

153.
Predict the products for the this reaction:
K + HCl --> 
a)

KCl + H2

b)
KHCl 
c)

KH + Cl2

d)
KCl + H
154.
What are the products of this reaction?
Cu+ AgNO3--> 
a)

Cu(NO3)2 + Ag

b)
CuNO3 + Ag
c)

CuAg + NO3

d)
Cu+ AgNO3
155.

Predict the products of the reaction: Fe + CuSO4 ->

a)

Cu + SO4Fe

b)

Cu + FeSO4

156.

Predict the products of the reaction

Zn + H2S →

a)

ZnS + H

b)

ZnS + H2

c)

ZnS2 + H

d)

Zn2S + H2

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