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(Optional) PS Unit 2 Test Review

Total questions: 141

Worksheet time: 4hrs 11mins

Name
Class
Date
1.
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. 
2.
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
3.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
4.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
5.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
6.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
7.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
8.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
9.
Is the following equation balanced?...
Al + O2 --> 2Al2O3
a)
Yes!
b)
No!
10.
Which of the following reactions is balanced?
a)
2CH4 + O2 -> CO2 + H2O
b)
CH4 + 2O2 -> CO2 + H2O
c)
CH4 + 2O2 -> CO2 + 2H2O
d)
None of the chemical equations are balanced.
11.
Balance this equation...
HgO --> Hg + O2
a)
It is balanced 
b)
2HgO --> Hg + O2
c)
2HgO --> 2Hg + O2
d)
I don't know...Oh well!
12.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
13.
Balance this equation.
_CF4 + _Br2 -- _CBr4 + _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2
14.
An element plus additional element reacts to form one product is an example of which type of chemical reaction? 
a)
combustion
b)
decomposition 
c)
synthesis 
d)
single replacement
15.
Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas this happens because? 
a)
Magnesium is higher on the reactivity series then hydrogen
b)
magnesium is more reactive than hydrogen
c)
magnesium is able to break the bond between HCl and form MgCl2
d)
both b and c are correct
16.
Describes the number of molecules in a compound and is used to balance a chemical reaction. 
a)
coefficient 
b)
subscript
c)
superscript
d)
SI unit
17.
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
18.
What type of chemical reaction takes place when fluorine reacts with sodium bromide?
a)
single replacement 
b)
double replacement 
c)
combustion
d)
synthesis 
19.
Which reaction between halogens and halide salts will occur?
a)
F2(g)  +  FeI2(aq) → FeF2(aq)  +  I2 (g)
b)
Cl2(g) + SrF2(aq)  → SrCl2(aq)  +  F2(g)  
c)
I2(g)  + MgBr2(aq)  → MnI2(aq)  + Br2(g)
d)
Br2(l)  +  CoCl2(aq) → CoBr2(aq)  +  Cl2(g)
20.
A chemical reaction that shows the formation of a solid and identifies the spectator ions
a)
net ionic equation 
b)
double replacement 
c)
ionic equation 
d)
dissociation 
21.
Predict the following reaction 
NaCl   +   Ca(NO3)2 --> 
a)
no reaction both products are aqueous 
b)
Calcium chloride and sodium nitrate are produced  
c)
sodium nitrate is a solid formed 
d)
calcium chloride is the solid formed
22.
A compound is reacted and forms two new substances. What type of reaction is this? 
a)
combustion 
b)
synthesis 
c)
decomposition 
d)
single replacement 
23.
Describes the number of atoms in a compound of each element. 
a)
coefficient 
b)
superscript 
c)
subscript 
d)
SI unit 
24.
The word oxidation describes 
a)
gain of electrons
b)
loss of electrons 
c)
number of electrons remains the same
d)
number of electrons transfered
25.
The word reduction describes 
a)
gain of electrons 
b)
loss of electrons 
c)
number of electrons remains the same
d)
transfer of electrons
26.
What are the correct coefficients when this equation is balanced?
KClO3  --> KCl  +  O2
a)
2,2,2
b)
2,2,3
c)
1,2,3
d)
3,3,3
27.
Which half reaction shows the element being reduced.  In the following reaction. 
2Na   +   Cl2  --> 2NaCl
a)
Na0   --> Na+1   +   1e-
b)
Cl20  +  2e-  --> 2Cl-
c)
Na0  +  1e- --> Na+1  
d)
Cl20 --> 2Cl-  + 2e-
28.
A metal is reacted with an acid to produce a salt and a hydrogen gas. What type of reaction has occurred? 
a)
neutralization 
b)
double replacement 
c)
single replacement 
d)
synthesis 
29.

What type of reaction involves the breaking down of a substance into simpler substances?

a)

Single Replacement Reaction

b)

Double Replacement Reaction

c)

Synthesis Reaction

d)

Decomposition Reaction

30.

What type of reaction involves 2 substances combining to form 1 new compound?

a)

Decomposition Reaction

b)

Single Replacement Reaction

c)

Double Replacement Reaction

d)

Synthesis Reaction

31.

What type of reaction involves one element replacing another element in a compound?

a)

Single Replacement Reaction

b)

Double Replacement Reaction

c)

Synthesis Reaction

d)

Decomposition Reaction

32.

What type of reaction involves ions from 2 compounds exchanging places to form 2 completely new compounds?

a)

Single Replacement Reaction

b)

Double Replacement Reaction

c)

Synthesis Reaction

d)

Decomposition Reaction

33.

What are the reactants in the chemical equation pictured?

a)

CH4 and CO2

b)

CH4 and O2

c)

CO2 and H2O

d)

O2 and H2O

34.

What are the products of the chemical reaction pictured?

a)

CH4 and CO2

b)

CH4 and O2

c)

CO2 and H2O

d)

O2 and H2O

35.

What type of chemical reaction is this one?

Al(OH)3 --> Al2O3 + H2O

a)

Decomposition

b)

Combustion

c)

Synthesis

d)

Single Replacement

36.

What type of chemical reaction is this one?

CUO + CO2 --> CuCO3

a)

Decomposition

b)

Combustion

c)

Synthesis

d)

Single Replacement

37.

What type of chemical reaction is this one?

Ca + MgCl2 --> CaCl2 + Mg

a)

Decomposition

b)

Combustion

c)

Synthesis

d)

Single Replacement

38.

3KOH + H3PO4 --> K3PO4 + 3H2O

a)

Combination

b)

Decomposition

c)

Single replacement

d)

Double replacement

39.
CxHy +O2 --> H2O + CO2
a)
Decomposition
b)
Double replacement
c)
Combustion
d)
Single Replacement
40.
Pb(NO3)2 --> PbO + NO2 + O2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
41.

Combustion reactions will always involve

a)

Oxygen and a solid

b)

Liquid nitrogen and heat

c)

Oxygen and heat/energy

d)

CO and H2O

42.

When Lead Nitrate reacts with potassium iodide, Yellow precipitate of ............. is formed

a)

PbI2

b)

KNO3

c)

Pb(NO3)2

d)

PbIO3

43.

Balancing this reaction:

____ CH4 + ____ O2 ---> ___ CO2 + ____ H2O

a)

2,1,3,1

b)

1,2,1,2

c)

1,2,2,1

d)

2,1,1,2

44.

Balance this reaction:

____ Na3PO4 + ____ KOH ---> ____ NaOH + ____ K3PO4

a)

1,3,3,1

b)

1,3,2,1

c)

2,3,3,1

d)

1,1,3,1

45.

Balance this reaction:

____ NaF + ____ Br2 ---> ___ NaBr + ____ F2

a)

3,1,2,1

b)

1,2,3,4

c)

2,1,2,1

d)

1,2,1,2

46.
The red numbers in the image below represent ________
a)
subscripts
b)
coefficients
c)
I don't know, and don't want to try
d)
None of the answers are correct
47.
The blue numbers in the image below represent ________
a)
I don't know, and don't want to try
b)
coefficients
c)
subscripts
d)
none of the answers are correct
48.

Two chemicals reacted and one of the products stays dissolved in the solution. What symbol is used to indicate this?

a)

(s)

b)

(l)

c)

(aq)

d)

(g)

49.

Predict the products for this substance: Al2O3 → ? + ?

a)

Al + O2

b)

O2 + Al3

c)

Al2 + O3

d)

Al + O

e)

Al3 + O

50.

Predict the products if Calcium Carbonate reacts with Silver Sulfate.

CaCO3 + Ag2SO4 → ?

a)

Ag2CO3 + Ca2SO4

b)

AgCO3 + CaSO4

c)

CaSO4 + Ag2CO3

d)

Ag(CO3)2 + CaSO4

51.

In a reaction, Barium Chloride reacts with Potassium Carbonate to produce Barium Carbonate and Potassium Chloride. Determine the solubility of each product. Which answer choice correctly states one of the products?

a)

BaCl2 (aq)

b)

KCl (s)

c)

BaCO3 (s)

d)

K2CO3 (aq)

e)

BaCO3 (aq)

52.

If Ethylene (C2H4) reacts with Oxygen gas in a chemical reaction, what are the products?

a)

C2O2 + H4

b)

CO2 + H2 + O2

c)

CO + H2

d)

CO2 + H2O

53.

Barium Bromide reacts with Lithium Phosphate to yield Lithium Bromide and Barium Phosphate. What substance forms the precipitate in this reaction?

a)

Lithium Phosphate

b)

Lithium Bromide

c)

Barium Bromide

d)

Barium Phosphate

54.
What are the products of this reaction?
Cu+ AgNO3--> 
a)
Cu(NO3)2+Ag
b)
CuNO3 + Ag
c)
CuAg+NO3
d)
Cu+ AgNO3
55.
Write a Balanced Equation for this reaction:
C2H4 + 2 O2 -->
a)
C2O2 + H4
b)
CO2 + HOH
c)
CO + H
d)
2 CO2 + 2H2O
56.
What are the correct formulas and coefficients for the products of the following single-replacement reaction?
Mg + Al(OH)3 →
a)
No Reaction
b)
Al + Mg(OH)3
c)
2 Al + 3 Mg(OH)2
d)
3 Al + MgOH3
57.
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
58.
What kind of reaction is this:
4Fe  +  3O2 →   2Fe2O3 
a)
Synthesis
b)
Decomposition
c)
Single Replacement 
d)
Double Replacement
59.
What kind of reaction is this:
2H2O2 →2 H2O + O2
a)
Synthesis
b)
Decomposition
c)
Single Replacement 
d)
Combustion
60.
What kind of reaction is this:
Fe + CuSO4 -> Cu + FeSO4
a)
Double Replacement
b)
Decompostion
c)
Single Replacement
d)
Combustion
61.
in a reaction, aqueous barium chloride reacts with aqueous potassium carbonate to produce solid barium carbonate and aqueous potassium chloride. what is the correct balanced equation.
a)
Ba2Cl(aq) + KCO3(aq) --> BaCO3(s) + KCl(aq)
b)
BaCl2(aq) + K2CO3(aq) --> BaCO3(s) + 2KCl(aq)
c)
BaCl(aq) + K2CO3(aq) --> BaCO3(s) + K2Cl(aq)
d)
Ba2Cl2(aq) + KCO3(aq) --> Ba2CO3(s) + KCl2(aq)
62.

What are the products of this reaction?

Cu2+ + AgNO3 →

a)

Cu(NO3)2 + Ag

b)

CuNO3 + Ag

c)

CuAg + NO3

d)

Cu + AgNO3

63.

Write a balanced reaction for this reaction [Zn has a charge of 2+]

Zn(s) + H2S(aq) →

a)

ZnS + H

b)

ZnS + H2

c)

ZnS2 + H

d)

Zn2S + H2

64.

Write a balanced equation for this DR reactions

NaOH + Fe(NO3)3 -->

a)

NaFe + OH(NO3)3

b)

2NaNO3 + 3Fe(OH)3

c)

NaNO3 + FeOH

d)

3NaNO3 + Fe(OH)3

65.
Predict the products for the this reaction:
K + HCl --> 
a)
KCl + H2
b)
KHCl 
c)
KH + Cl2
d)
KCl + H
66.

Predict the products for the this reaction:

Mg + CuCl2 →

a)

MgCl2 + Cu

b)

MgCl + Cu

c)

MgCu + Cl2

d)

CuMg + Cl2

67.

Predict the products for the this reaction: [Ag has a charge of 1+]

Ag3N + KCl →

a)

AgCl + K3N

b)

AgK + ClN3

c)

AgN3 + KCl

d)

KAg + N3Cl

68.

What are the correct formulas and coefficients for the products of the following single-replacement reaction?

Ag + K2SO4 →

a)

No Reaction

b)

K2 + AgSO4

c)

2K + Ag(SO)4

d)

2K + AgSO4

69.

When electrons are transfered from cations to anions a(an) ________ bond is formed

a)

polar covalent

b)

nonpolar covalent

c)

ionic

d)

metallic

70.

When electrons are shared a(an) ________ bond is formed

a)

ionic

b)

covalent

c)

metallic

71.

Of these 3 molecules, which represents a covalent bond?

a)

O2

b)

NaI2

c)

HBr

d)

MgO

72.

All elements are made up of tiny particles called _____________

a)

cells

b)

matter

c)

atoms

d)

elements

73.

A(an) __________ bond exists between two nonmetals.

a)

ionic

b)

covalent

74.
What is a positivly charge atom called?
a)
cation
b)
anion
75.

What is a negatively charged atom called?

a)

Anion

b)

Cation

c)

Ion

76.
Which type of bond has a transfer of an electron from on atom to another?
a)
Polar Covalent 
b)
Non Polar Covalent
c)
Ionic
d)
Metallic
77.

Why do atoms bond?

a)

They typically don't bond

b)

To add or take away energy levels

c)

To have a full valence shell.

d)

To have a full inner shell

78.

What charge would a potassium (K) ion have?

a)

+1

b)

-1

c)

+2

d)

-2

79.
If an atom loses two electrons what charge will it have?
a)
+ 2
b)
 - 2
c)
+1
d)
-1
80.
How many valence electrons in this structure?
a)
6
b)
5
c)
4
d)
7
81.

What is a valence electron?

a)

an electron that is found in the outermost shell of an atom.

b)

an electron found in the innermost shell of an atom.

c)

an electron found in the middle shell.

82.

What usually forms the positive ion?

a)

Metal

b)

Nonmetals

c)

None

83.

Which category of elements usually form negative ions?

a)

metals

b)

nonmetals

c)

metalloids

d)

noble gases

84.
A charged particle that has gained or lost electrons is called a _____.
a)
molecule
b)
ion
c)
isotope
d)
element
85.
Metals form ions by _____________ electrons, nonmetals form ions by   ___________ electrons. 
a)
losing, gaining
b)
gaining, losing
c)
 losing, losing
d)
gaining, gaining
86.

How many valence electrons does an atom of phosphorus have?

a)

3

b)

2

c)

5

d)

8

87.

What is the name of K2O?

a)

Dipotassium monoxide

b)

Dipotassium oxygen

c)

Potassium oxide

d)

Potassium oxygen

88.

What is the name of NF3?

a)

Mononitrogen trifluoride

b)

Nitrogen trifluoride

c)

Nitrogen flouride

d)

Nitrogen fluorine

89.

What is the name for CO?

a)

Copper Oxide

b)

Carbon monoxide

c)

Monocarbon oxide

d)

Copper monoxide

90.
What is the formula for sulfur pentoxide?
a)
SO2
b)
SO3
c)
SO4
d)
SO5
91.
What is the formula for Silicon dioxide?
a)
SO
b)
SO2
c)
SiO
d)
SiO2
92.
What is the formula for Lithium Iodide?
a)
LiI
b)
LiI2
c)
LiI3
d)
LiI4
93.

A group of covalent bond atoms are called a _________________

a)

compound

b)

molecule

c)

ion

d)

chemical

94.

Chemical bonding happens between _________________ of an element.

a)

atoms

b)

protons

c)

neutrons

d)

element

95.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
96.
What elements generally make a covalent bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
97.
The number of valence electrons is equal to the ____________ for the representative elements (group A elements)
a)
period number
b)
Atomic number
c)
group number
d)
oxidation number
98.

How many electrons are needed in the outer energy levels of an atom, in order for that atom to be stable?

a)

6

b)

1

c)

8

d)

2

99.

Looking at your Periodic Table, what kind of bond would NaF create?

a)

Covalent

b)

Molecular

c)

Ionic

d)

Metallic

100.
How do the following two elements bond together?
Cr3+  O2-         
a)
CrO
b)
Cr3O2
c)
Cr2O3
d)
CrO3
101.
The proper formula for magnesium hydroxide:
a)
MgOH
b)
Mg2OH
c)
Mg(OH)2
d)
Mg2OH2
102.
Which of the following combinations would need roman numerals in the name?
a)
potassium + fluorine
b)
beryllium + oxygen
c)
boron + iodine
d)
silver + oxygen
103.

Name the following ionic compound: Cr(NO2)3

a)

Chromium nitrite

b)

Chromium nitride

c)

Chromium (III) nitride

d)

Chromium (III) nitrite

104.
How do the following two elements bond together?
Al3+  O2-         
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
105.

Name the following compound: NaNO3

a)

Sodium Nitrogen Oxide

b)

Sodium nitrate

c)

Sodium nitrite

d)

Sodium nitride

106.

What is the name of NH4Cl?

a)

Nitrogen tetrahydrogen chloride

b)

Ammonium chlorine

c)

Ammonium chloride

d)

Ammonium chlorate

107.
What is the name of K3PO4?
a)
Tripotassium Phosphate
b)
Tripotassium Phosphite
c)
Potassium phosphide
d)
Potassium phosphate
108.

Name the following ionic compound: MgSO4

a)

Magnesium sulfoxide

b)

Magnesium sulfide

c)

Magnesium sulfate

d)

Magnesium oxide

109.

Name the following ionic compound: LiNO3

a)

Lithium nitrate

b)

Lithium (III) nitrate

c)

Lithium nitride

d)

Lithium oxide

110.
Which naming pattern is unique to polyatomic ionic compounds?
a)
they can have prefixes
b)
they can end in -ide
c)
they can end in -ate
d)
they use Roman Numerals
111.

Name this compound: NH4F

a)

Ammonia fluoride

b)

Ammonium fluorite

c)

Ammonia fluorate

d)

Ammonium fluoride

112.
Identify Gallium Sulfate
a)
GaSO4
b)
Ga2(SO4)3
c)
Ga3(SO4)2
d)
Ga2SO4
113.

Name the following ionic compound: Cr(NO2)3

a)

Chromium nitrite

b)

Chromium nitride

c)

Chromium (III) nitride

d)

Chromium (III) nitrite

114.
The chemical compound for sodium phosphate would be:
a)
NaPO4
b)
Na2PO4
c)
Na3PO4
d)
Na(PO4)3
115.
Ammonium and oxygen would combine to form:
a)
(NH4)2O
b)
NH4O2
c)
(NH4)O2
d)
NH6O3
116.
If copper (II) and phosphate bond together, the resulting chemical formula would be:
a)
Cu2(PO4)3
b)
CuPO4
c)
Cu3(PO4)2
d)
Cu3PO4
117.
What is the formula for copper (II) hydroxide?
a)
CuOH
b)
Cu(OH)2
c)
Cu2OH
d)
Cu2O
118.
What is the correct formula for barium phosphate?
a)
BaPO4
b)
Ba2(PO4)3
c)
Ba3(PO4)2
d)
BaP
119.

What is the correct name of Fr2CO3

a)

Francium carbide

b)

Francium carbonate

c)

Francium (II) carbonate

d)

Francium (I) carbonate

120.

Name the following compound: FeCl3

a)

Iron (II) chloride

b)

Iron (III) chloride

c)

Iron chlorate

d)

Iron (III) chlorate

121.

The name of Cu₃N₂ is

a)

Copper (III) nitride

b)

Copper (II) nitride

c)

Copper nitride

d)

Tricopper dinitride

122.

what is the chemical formulas for copper (II) chloride?

a)

CuCl2

b)

CuCl

c)

Cu2Cl

d)

Cu2Cl2

123.

Write the formula for copper (I) phosphide

a)

Cu3P

b)

CuP

c)

Cu1P

d)

CuP3

124.
Which is not a pattern of covalent compounds?
a)
they end in -ide
b)
they have Roman Numerals
c)
they have nonmetals only
d)
they have prefixes
125.
Which naming pattern is unique to polyatomic ionic compounds?
a)
they can have prefixes
b)
they can end in -ide
c)
they can end in -ate
d)
they use Roman Numerals
126.
Carbon monoxide is a deadly gas produced from incomplete combustion. What type of compound is it?
a)
covalent
b)
simple ionic
c)
polyatomic ionic
d)
multivalent ionic
127.
What type of compound is KNO3?
a)
covalent
b)
simple ionic
c)
polyatomic ionic
d)
multivalent ionic
128.

What is the name of Si2Cl6?

a)

Disilicon hexachlorine

b)

Disilicon hexachloride

c)

Silicon hexachloride

d)

Silicon chloride

129.

A polyatomic ion is a group of covalently bonded atoms that __________________.

a)

is neutral

b)

has a charge

130.

When naming a transition metal ion that can have more than one common ionic charge, the numerical value of the charge is indicated by a __________.

a)

prefix

b)

suffix

c)

superscript after the name

d)

Roman numeral following the name

131.

Which of the following is true about the composition of ionic compounds?

a)

They are composed of anions and cations.

b)

They are composed of anions only.

c)

They are composed of cations only.

d)

They are formed from two or more nonmetallic elements.

132.

What is the correct name for the compound CoCl2?

a)

Cobalt (I) chlorate

b)

Cobalt (I) chloride

c)

Cobalt (II) chlorate

d)

Cobalt (II) chloride

133.
What is the name of N2O3
a)
Nitrogen trioxide
b)
Dinitrogen oxide
c)
Dinitrogen trioxide
d)
Nitrogen oxide
134.
What is the chemical formula for Tetrasulfur pentoxide?
a)
SO
b)
S4O
c)
S4O5
d)
S5O4
135.
Roman numerals tell you the ____ of the metal cation(s) in an ionic compound.
a)
number
b)
mass
c)
type
d)
charge
136.
Ionic compounds are written with
a)
cation (+ ion) first then anion (- ion)
b)
anion (- ion) first then cation (+ ion)
c)
either way is fine
d)
polyatomic ions first
137.

MgO

a)

Magnesium monoxide

b)

Magnesium oxide

c)

Magnesium (II) oxide

d)

Monomagnesium monoxide

138.

Dihydrogen monoxide

a)

HO2

b)

H(II)O

c)

H2O

d)

OH2

139.

Covalent compound names include

a)

roman numerals

b)

prefixes

c)

polyatomic ions

d)

endins in -ate

140.

The roman numerals in a name is always in what type of compound?

a)

covalent

b)

ionic

c)

there are never roman numerals in a name

141.

If a compound's name ends in anything besides -ide we know:

a)

not enough information

b)

it is covalent

c)

it is ionic

d)

it includes a polyatomic ion

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