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Worksheets

Chem Final Master List

Total questions: 200

Worksheet time: 3hrs 20mins

Name
Class
Date
1.

Changes or properties that can not be observed without changing the chemical makeup of the substance is known as what?

a)

Physical

b)

Chemical

c)

Quantitative

d)

Qualitative

2.

The following statements describe a physical property EXCEPT one.

a)

Ice melts when heated

b)

Aluminum is a silver-colored metal

c)

The density of water is 1g/cm3

d)

An iron bar rusts

3.

Which of the following is a physical change?

a)

Rotting Wood

b)

Boiling Water

c)

Burning Food

d)

Baking a Cake

4.

Which is the most dense state of matter?

a)

solid

b)

liquid

c)

gas

d)

plasma

5.

In identifying a sample of a pure substance, which may be its chemical property?

a)

Its mass is 26.87 g

b)

It melts when heated

c)

It burns in air

d)

It is a good heat conductor

6.

A classification of matter that is made up on only 1 type of particle is called

a)

a heterogeneous mixture

b)

a pure substance

c)

a homogeneous mixture

d)

a blender

7.
This picture represents: 
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
8.
Which is NOT a chemical change?
a)
Leaves changing colors in the fall
b)
Iron rusting
c)
Digesting Lunch
d)
Ice Melting
9.

Aluminium foil is an example of a.....

a)
pure element
b)
pure compound
c)
heterogeneous mixture
d)
homogeneous mixture
10.

Which of the following is a chemical property?

a)

Melting point

b)

Ductility

c)

Colour

d)

Flammability

11.

1.Particles cannot change position in a ________

a)

solid state

b)

liquid state

c)

gas state

12.
Which of the following is NOT a pure substance?
a)
milk
b)
oxygen
c)
water
d)
carbon dioxide
13.
This image represents a(n)
a)
element
b)
compound
c)
mixture
d)
colloid
14.
The air that fills this room would be classified as
a)
an element
b)
a compound
c)
a homogeneous mixture
d)
a pure substance
15.

What is a sign of a chemical change?

a)

Stretching

b)

Tearing

c)

Compressing

d)

Bubbles

16.

What happens to the atoms of a substance in a chemical change?

a)

Atoms get bigger

b)

Atoms change their arrangement and motion

c)

Atoms get smaller

d)

Atoms bond together differently

17.

Which of the following changes is a physical change of matter?

a)

water evaporating

b)

paper burning

c)

a nail rusting

d)

a silver spoon tarnishing

18.

A pure substance made of more than one type of atom

a)

element

b)

homogenous mixture

c)

compound

d)

heterogeneous mixture

19.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
20.
Which is the electron configuration for an oxygen atom?
a)
1s22s22p63s23p64s2
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p6
21.
How many valence electrons are represented here?
a)
7
b)
5
c)
2
d)
8
22.
How many d orbitals are there in a given sublevel?
a)
1
b)
3
c)
5
d)
7
23.
How many p orbitals are there in a sublevel?
a)
2
b)
1
c)
4
d)
3
24.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
25.
What is this element? 
1s22s22p63s23p6
4s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
26.
What atom matches this electron configuration?
[Xe] 6s2 4f14 5d9
a)
Mercury
b)
Gold
c)
Platinum
d)
Thallium
27.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
28.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
29.
How many valence electrons does Chlorine have?
a)
5
b)
2
c)
7
d)
5
30.
What noble gas should be used to write the shorthand configuration for Te?
a)
Ar
b)
Kr
c)
Xe
d)
Sb
31.
Identify the element in Period 5 that has 1 valence electron?
a)
Rb
b)
Nb
c)
Ag
d)
Sb
32.
Which of the following is a p block element?
a)
Ca
b)
Ar
c)
Re
d)
Au
33.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
34.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
35.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
36.
What is the noble gas configuration for Sulfur?
a)
[Ar] 3p4
b)
[He] 3s2 3p4
c)
[Ne] 3s2 3p4
d)
[Na] 3s2 3p4
37.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
38.

An atom with an electrical charge is called an _____________.

a)

Atom

b)

Isotope

c)

Covalent

d)

Ion

39.

The electrons found in the outermost shell are called _____________ electrons.

a)

Energy

b)

Valence

c)

Negative

d)

Covalent

40.

A positively charged atom (more protons than electrons) is called a __________.

a)

Anion

b)

Cation

c)

Isotope

d)

Positron

41.

A negatively charged atom (more electrons than protons) is called a __________.

a)

Anion

b)

Cation

c)

Isotope

d)

Megatron

42.

Atoms with the same number of protons but different numbers of neutrons (Carbon 14 and Carbon 12) are called ___________.

a)

Anion

b)

Cation

c)

Isotope

d)

Isomer

43.

Valence electrons means..

a)

Electrons inside the atoms

b)

Electrons on the outer most energy level

c)

Electrons with no charge

d)

Electrons that are stable

44.

Noble gases are...

a)

Happy and stable because they have full valence electrons

b)

Happy BUT UNSTABLE because they are gases

c)

Not happy because they don't want to be noble

d)

Not happy but stable because they are group number 18

45.

This isotope have how many neutrons?

a)

26

b)

12

c)

14

d)

16

46.

For Cl 37, what does the 37 represent?

a)

Number of Protons

b)

Number of Neutrons

c)

Number of Electrons

d)

Atomic Mass Number

47.

Which scientist proposed the Nuclear Model by doing the Gold Foil Experiment?

a)

Rutherford

b)

J.J. Thomson

c)

Bohr

d)

Dalton

48.

Protons are...

a)

Positive charge

b)

Negative charge

c)

Neutral/No charge

49.

Electrons are...

a)

Positive charge

b)

Negative charge

c)

Neutral/No charge

50.

Neutrons are...

a)

Positive charge

b)

Negative charge

c)

Neutral/No charge

51.

How many neutrons are in the given atom?

a)

92

b)

143

c)

235

d)

327

52.

What is the mass number of bromine?

a)

35

b)

45

c)

80

d)

79.904

53.

How many electrons does this magnesium ion have?

a)

24

b)

12

c)

10

d)

14

54.

If aluminum loses 3 electrons, what will the charge be?

a)

+

b)

-

c)

+3

d)

-3

55.

What type of decay is shown in this equation?

a)

alpha decay

b)

beta decay

c)

gamma emission

56.

What particle completes this reaction?

a)
b)
c)
d)
57.
Solve this equation for alpha decay.
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
58.
Solve this equation for beta decay.
614C = ___ + -10e
a)
410Be
b)
714N
c)
210He
d)
613C
59.

What type of decay type is shown by this generic equation?

a)

alpha decay

b)

beta decay

c)

gamma emission

d)

fission

60.

What type of decay type is shown by this generic equation?

a)

alpha decay

b)

beta decay

c)

gamma emission

d)

fission

61.

What type of decay type is shown by this generic equation?

a)

alpha decay

b)

beta decay

c)

gamma emission

d)

fission

62.
What particle completes this reaction?
a)
alpha particle
b)
beta particle
c)
gamma particle
d)
neutron
63.
Solve this equation for beta decay.
6027Co = ___ + 0-1e
a)
5625Mn
b)
6028Ni
c)
5823V
d)
5927Co
64.
Solve this equation for alpha decay.
20985At = ___ + 42He
a)
20583Bi
b)
20986Rn
c)
20781Tl
d)
20885At
65.
What is the missing isotope that will balance the following nuclear equation?
94Be  +  11H →  _____  +  42He
a)
105B
b)
105Ne
c)
63Li
d)
63C
66.

What particle completes this reaction?

a)

42He

b)

0-1 e

c)

00Y

d)

178O

67.

What particle completes this reaction?

a)

42He

b)

0-1 e

c)

00γ

d)

178O

68.

What particle completes this reaction?

a)

42He

b)

0-1 e

c)

00Y

d)

178O

69.

What type of nuclear equation is this?

a)

fusion

b)

fission

c)

alpha decay

d)

beta decay

70.

A horizontal row in the periodic table is called a:

a)

group

b)

period

c)

family

d)

row

71.

A vertical column in the periodic table is called a:

a)

group

b)

period

c)

family

d)

row

72.

What is the name of the scientist who first organized the elements into a periodic table?

a)

Dmitri Mendeleev

b)

John Dalton

c)

Ernest Rutherford

d)

JJ Thomson

e)

Erwin Schrodinger

73.
a)

metals

b)

nonmetals

c)

metalloids

74.
a)

metals

b)

nonmetals

c)

metalloids

75.
a)

metals

b)

nonmetals

c)

metalloids

76.

Where are the elements that are gases?

a)
b)
c)
77.

Where are the elements that are solids?

a)
b)
c)
78.

What is the name for the group of elements in the last column of the periodic table?

a)

alkali metals

b)

alkaline earth metals

c)

noble gases

d)

halogens

79.
a)

representative elements

b)

transition metals

c)

inner transition metals

d)

metalloids

80.

Which atom has the largest atomic radius?

a)

potassium

b)

rubidium

c)

francium

d)

cesium

81.

Which ion has the smallest radius?

a)

O2-

b)

S2-

c)

Se2-

d)

Te2-

82.

Which term represents the strength of the attraction an atom has for the electrons in a chemical bond?

a)

Electrical conductivity

b)

Electronegativity

c)

First ionization energy

d)

Specific heat capacity

83.

An atom of which element has the strongest attraction for the electrons in a bond?

a)

Aluminum

b)

Carbon

c)

Chlorine

d)

Lithium

84.

Which atom has the weakest attraction for electrons

in a chemical bond?

a)

a boron atom

b)

a calcium atom

c)

a fluorine atom

d)

a nitrogen atom

85.

Which element requires the least amount of energy

to remove the most loosely held electron from a

gaseous atom in the ground state?

a)

bromine

b)

calcium

c)

sodium

d)

silver

86.

As you look from left to right across a period, electronegativity

a)

increases

b)

decreases

87.

The correct name for CaBr2 is

a)

calcium dibromide

b)

calcium (II) bromide

c)

calcium bromide

d)

carbon bromide

88.

The correct name for P2O5 is

a)

potassium oxide

b)

dipotassium pentoxide

c)

diphosphorus pentoxide

d)

phosphorus oxide

89.

The correct name of Fe2(CO3)3 is

a)

iron carbonate

b)

Iron (II) carbonate

c)

diiron tricarbonate

d)

Iron (III) carbonate

90.

The name of the compound Mg3(PO4)2 is

a)

magnesium phosphate

b)

magnesium phosphite

c)

trimagnesium diphosphate

d)

magnesium (III) phosphate

91.

The formula for aluminum acetate is

a)

Al(Ac)3

b)

Al(C2H3O2)3

c)

AlC2H3O2

d)

Al3C2H3O2

92.

The chemical formula for manganese (VII) sulfite is

a)

Mn2(SO4)7

b)

Mn7(SO4)2

c)

Mn2S7

d)

Mn2(SO3)7

93.

The formula for sulfur hexafluoride is

a)

S6F

b)

SF6

c)

SuF5

d)

SFl6

94.

The formula for barium hydroxide is

a)

BaOH

b)

Ba(OH)2

c)

BaO

d)

BaH2

95.

What is the correct name of the compound NO2?

a)

Nitrogen oxide

b)

Mononitrogen dioxide

c)

Nitrogen dioxide

d)

Dinitrogen monoxide

96.

What is the name of the compound NH4OH?

a)

Nitrogen oxygen hydride

b)

Nitrogen hydroxide

c)

Ammonium oxygen hydride

d)

Ammonium hydroxide

97.

The name of FeCl₂ is

a)

iron chloride

b)

iron (II) chloride

c)

iron (I) chloride

d)

iron dichloride

98.

What is the name of the compound Sc(OH)3?

a)

Scandium (III) hydroxide

b)

Scandium (I) hydroxide

c)

Scandium (II) hydroxide

d)

Scandium hydroxide

99.

Ba3P2

a)

barium phosphite

b)

barium phosfide

c)

barium potasside

d)

barium phosphide

100.

What is the name of PBr3

a)

phosphorus tribromide

b)

phosphorus bromide

c)

phosphorus (III) bromide

d)

phosphorus bromine

101.

What is the name of FeO?

a)

iron(III) oxide

b)

iron(II) oxide

c)

iron(III) oxygen

d)

iron oxide

102.
carbon monoxide
a)
CO
b)
CO2
c)
C2O
d)
COH
103.
Choose the correct shape for this molecule:
a)
linear
b)
Trigonal pyramidal
c)
Bent
d)
Tetrahedral
104.

Determine the molecular geometry of the given structure.

a)

Trigonal Pyramidal

b)

Trigonal Bipyramidal

c)

Trigonal Planar

d)

Tetrahedral

105.

The geometry of a molecule with 4 bonded pairs of electrons and 0 lone pairs of electrons, AB4

a)

Tetrahedral

b)

Trigonal Planar

c)

Bent

d)

Trigonal Pyramidal

e)

Linear

106.

The geometry of a molecule with 2 bonded pairs of electrons and 2 lone pairs of electrons, AB2E2

a)

Tetrahedral

b)

Trigonal Planar

c)

Bent

d)

Trigonal Pyramidal

e)

Linear

107.

The geometry of a molecule with 3 bonded pairs of electrons and 0 lone pairs of electrons, AB3

a)

Tetrahedral

b)

Trigonal Planar

c)

Bent

d)

Trigonal Pyramidal

e)

Linear

108.
*
a)
linear
b)
trigonal planar
c)
trigonal pyramid
d)
bent of angular
109.
*
a)
trigonal pyramid
b)
linear
c)
bent
d)
angular
110.
SiCl4 has what shape?
a)
square planar
b)
square pyramidal
c)
tetrahedral
d)
octahedral
111.
What is the shape of H2O?
a)
linear
b)
tetrahedral
c)
bent
d)
trigonal pyramidal
112.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
113.
Who could this be? 
a)
CO2
b)
NH3
c)
H2S
d)
CH4
114.
Who could this be?
a)
H2O
b)
NH3
c)
CO2
d)
CH4
115.

What is the molecular geometry of CO2?

a)

Bent

b)

Trigonal planar

c)

Trigonal pyramidal

d)

Linear

116.

Describe the shape of the molecule.

a)

linear

b)

bent

c)

trigonal pyramidal

d)

tetrahedral

117.

Describe the shape of the molecule.

a)

linear

b)

bent

c)

trigonal pyramidal

d)

tetrahedral

118.

Describe the shape of the molecule.

a)

linear

b)

bent

c)

trigonal pyramidal

d)

tetrahedral

119.
Choose the correct shape for this molecule:
a)
Trigonal planar
b)
Trigonal pyramidal
c)
Tetrahedral
d)
Linear
120.
Choose the correct shape for this molecule:
a)
Trigonal planar
b)
Trigonal pyramidal
c)
Bent
d)
Linear
121.
Choose the correct shape for this molecule:
a)
linear
b)
Trigonal pyramidal
c)
Bent
d)
Tetrahedral
122.
Choose the correct shape for this molecule:
a)
linear
b)
Trigonal pyramidal
c)
Bent
d)
Tetrahedral
123.
Choose the correct shape for this molecule:
a)
Tetrahedral
b)
Trigonal pyramidal
c)
Bent
d)
Trigonal planar
124.

What is the formula for Boyle's Law?

a)

P1V1=P2V2

b)

P1V1/P2V2

c)

P1V2=P2V1

d)

P1/V1=P2/V2

125.
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
126.
A gas at a volume of 4 liters is at a pressure of 2 atm. The volume is changed to 16 Liters, what must the new pressure be?
a)
2 atm
b)
12 atm
c)
10 atm
d)
0.5 atm
127.
Which container will have a lower pressure?
a)
left
b)
right
c)
they both have the same pressure
d)
I don't know
128.
What is the formula Charles' Law?
a)
V = T
b)
VT = VT
c)
T1 / V1 = T2 / V2
d)
V1 / T1 = V2 / T2
129.
What is 50 C in Kelvin?
a)
223
b)
323
c)
100
d)
50
130.

(Charles Law) 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

131.
Tom Brady enjoys balloon animals from the carnival. He just received a balloon giraffe that has an initial temperature of 39.0°C and a volume of 1.28 L. If Gronkowski plays a trick on Tom, and puts his balloon giraffe into the freezer, what would be the new volume of the balloon if the temperature drops down to 8.0°C?
(Don’t forget about what must be done to temperatures!)
a)
1.42 L
b)
6.85 x 104 L
c)
3.78 L
d)
1.15 L
132.
If 200 mL of a gas at 27°C is cooled to -33°C at a constant pressure, the volume will be
a)
250 mL
b)
204 mL
c)
196 mL
d)
160 mL
133.
How do gas molecules move? 
a)
in an orderly fashion 
b)
constantly and randomly
c)
in straight line paths
d)
in a circular motion
134.
When Volume increases then Pressure must...
a)
Increase
b)
Decrease
135.

A rigid plastic container holds methane gas at 0.9 atm pressure when the temperature is 22.0°C. How much more pressure will the gas exert if the temperature is raised to 44.6°C?

a)

0.97 atm

b)

1.82 atm

c)

0.97oC

d)

1.82oC

136.

A student measures the pressure and volume of an empty water bottle to be 1.4 atm and 2.3 L. She then decreases the pressure to 0.65 atm. What is the new volume?

a)

2.1 L

b)

5.0 L

c)

8.2 L

d)

3.9 L

137.

A student inflates a balloon with helium then places it in the freezer. The student should expect

a)

the balloon's volume to increase

b)

the balloon's volume to decrease

c)

the balloon's moles to increase

d)

the balloon's moles to decrease

138.

What is the pressure of a car tire that had an initial pressure of 1.8 atm but was heated from 38°C to 123°C?

a)

0.9 atm

b)

2.1 atm

c)

1.6 atm

d)

3.4 atm

139.

Three gases are mixed together in a container with a total pressure of 4.8 atm. If two of the gases have pressures of 1.2 atm and 1.5 atm, what is the pressure of the third gas?

a)

2.5 atm

b)

1.8 atm

c)

2.1 atm

d)

1.3 atm

140.

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

a)

The pressure will increase

b)

The pressure will decrease

c)

The pressure will remain constant

d)

The pressure will equalize

141.
In order to convert to Kelvin, you add ______ to the Celsius measurement.
a)
372
b)
273
c)
237
d)
732
142.

Which type of chemical reaction is the following chemical formula?

 AgCl → Ag + Cl2 AgCl\ \rightarrow\ Ag\ +\ Cl_2\   

a)

combustion

b)

decomposition

c)

double replacement

d)

single replacement

e)

synthesis

143.

Which type of chemical reaction is the following chemical formula?

 Mg +Cu(NO3)2 → Mg(NO3)2 + CuMg\ +Cu\left(NO_3\right)_2\ \rightarrow\ Mg\left(NO_3\right)_2\ +\ Cu  

a)

combustion

b)

decomposition

c)

double replacement

d)

single replacement

e)

synthesis

144.

Which type of chemical reaction is the following chemical formula?

 C7H14+O2 → CO2 + H2OC_7H_{14}+O_2\ \rightarrow\ CO_2\ +\ H_2O  

a)

combustion

b)

decomposition

c)

double replacement

d)

single replacement

e)

synthesis

145.

Which type of chemical reaction is the following chemical formula?

 H2O → H2 +O2H_2O\ \rightarrow\ H_2\ +O_2  

a)

combustion

b)

decomposition

c)

double replacement

d)

single replacement

e)

synthesis

146.

Which type of chemical reaction is the following chemical formula?

 Fe + S → FeSFe\ +\ S\ \rightarrow\ FeS  

a)

combustion

b)

decomposition

c)

double replacement

d)

single replacement

e)

synthesis

147.

Which type of chemical reaction is the following chemical formula?

 AgNO3 + K2CrO4 → KNO3 + Ag2CrO4AgNO_{3\ }+\ K_2CrO_{4\ }\rightarrow\ KNO_3\ +\ Ag_2CrO_4 

a)

combustion

b)

decomposition

c)

double replacement

d)

single replacement

e)

synthesis

148.

Which type of chemical reaction is the following chemical formula?

 NaCN+ H2SO4 → Na2SO4 + HCNNaCN+\ H_2SO_{4\ }\rightarrow\ Na_2SO_4\ +\ HCN 

a)

combustion

b)

decomposition

c)

double replacement

d)

single replacement

e)

synthesis

149.

Which type of chemical reaction is the following chemical formula?

 Al+ O2 → Al2O3Al+\ O_{2\ }\rightarrow\ Al_2O_3 

a)

combustion

b)

decomposition

c)

double replacement

d)

single replacement

e)

synthesis

150.

Which type of chemical reaction is the following chemical formula?

 C3H8 + O2 → CO2 + H2OC_3H_{8\ }+\ O_2\ \rightarrow\ CO_2\ +\ H_2O 

a)

combustion

b)

decomposition

c)

double replacement

d)

single replacement

e)

synthesis

151.

Which type of chemical reaction is the following chemical formula?

 FeOH3 → Fe2O3 + H2OFeOH_{3\ }\rightarrow\ Fe_2O_3\ +\ H_2O 

a)

combustion

b)

decomposition

c)

double replacement

d)

single replacement

e)

synthesis

152.

Balance the following:

____ Fe + ____ Cl2 → ____ FeCl3

a)
1,1,2
b)
1,3,1
c)
2,2,3
d)
2,3,2
153.
When balancing equations, the rule is that you can only add, change, and remove
a)
Coefficients
b)
Mass
c)
Subscripts
d)
Elements 
154.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
155.
a substance that is formed as the result of a chemical reaction
a)
Product 
b)
Reactant
c)
Starters
d)
Enders
156.
Balance this equation:
 2Li + Cl2 -> LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li + Cl2 -> 2LiCl
157.
How many significant figures: 216 m
a)
1
b)
2
c)
3
d)
0
158.
How many significant figures: 2016 m
a)
1
b)
2
c)
3
d)
4
159.
How many significant figures: 153.0 mL
a)
1
b)
2
c)
3
d)
4
160.
How many significant figures: 0.012 km
a)
1
b)
2
c)
3
d)
4
161.
How many significant figures: 1000 mL
a)
1
b)
2
c)
3
d)
4
162.
How many significant figures: 100.000 cL
a)
1
b)
3
c)
5
d)
6
163.
How many significant figures: 0.001 g
a)
4
b)
3
c)
2
d)
1
164.
How many significant figures: 4.20 cm
a)
1
b)
2
c)
3
d)
4
165.
How many significant figures: 0.010 L
a)
1
b)
2
c)
3
d)
4
166.

How many significant figures: 450 m

a)

3

b)

2

c)

1

d)

0

167.
How many sig figs are there?
100000000
a)
1
b)
9
c)
10
168.
How many sig figs are there?
0.000008
a)
1
b)
2
c)
6
d)
7
169.
Solve and give your answer with the correct number of significant figures
24.28 + 12.5
a)
3.687 x 101
b)
36.8
c)
37
d)
3.70x101
170.
Solve and give your answer with the correct number of significant figures
129.6/3
a)
43.0
b)
43
c)
 4x101
d)
40
171.
Solve and give your answer with the correct number of significant figures
(12.470)(271)
a)
3366.9
b)
3.37x103
c)
3400
d)
3370
172.

What is the mass of one mole of silver?

a)

32.06 g

b)

107.87 g

c)

14.01 g

d)

22.99 g

173.

48.86 g of cobalt is equal to how many moles of cobalt?

a)

1319 moles

b)

1.8 moles

c)

0.829 moles

d)

1.2 moles

174.

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

175.

What is Avogadro's Number?

a)

6.02 x 1023

b)

- 6.02 1023

c)

6.02 x 1022

d)

6,020,000,000,000

176.

How many moles are in 32 grams of Oxygen (O)?

a)

3

b)

2

c)

1

d)

4

177.

How many moles are in 20 grams of Ca (Calcium)?

a)

0.5

b)

1

c)

3

d)

20

178.
What is the molar mass of one molecule of Nitrogen N2?
a)
14.01 amu
b)
14.01 g
c)
28.02 g
d)
28.02 amu
179.
What is the molar mass of Carbon Dioxide (CO2)?
a)
12 amu
b)
12 g
c)
44 g
d)
44 amu
180.
Find the percent composition of N2S2.
a)
N: 69.6%  S: 30.4%
b)
N:36% S: 75.6%
c)
N: 96.6% S: 3.4%
d)
N: 30.4% S: 69.6%
181.
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
182.
Find the mass in grams of 0.75 moles of magnesium (Mg).
a)
32 grams
b)
18 grams
c)
2.21 x 10 ^23 grams
183.

85.0 g of NaOH is equal to how many moles?

a)

3400 moles

b)

45 moles

c)

0.47 moles

d)

2.1 moles

184.

2.0 moles of AuCl3 is equal to how many grams?

a)

152 g

b)

607 g

c)

464 g

d)

0.007 g

185.

25.0 g of MgCO3 is equal to how many moles?

a)

0.30 moles

b)

3.4 moles

c)

2100 moles

d)

0.48 moles

186.

36.0 g of Be contains how many moles?

a)

0.25 moles

b)

27 moles

c)

4.0 mole

d)

324 moles

187.

4.0 moles of H2O would have a mass of ___________?

a)

72.0 g

b)

68.0 g

c)

0.22 g

d)

4.5 g

188.

6.0 g of Carbon is equal to how many moles?

a)

1.0 moles

b)

0.5 moles

c)

2.0 moles

d)

72.0 moles

189.

 How many moles are in 220.0 g of Ar?

a)

0.18 moles

b)

180 moles

c)

8800 moles

d)

5.5 moles

190.

How many grams are in 4.5 moles of NaF ?

a)

9.3 g

b)

0.11 g

c)

189 g

d)

37.5 g

191.

 How many grams are in 0.2 moles of BeI2 ?

a)

52.6 g

b)

1315 g

c)

27.2 g

d)

0.002 g

192.

How many moles are present in a 32.5 sample of aluminum chloride AlCl3?

a)

720 moles

b)

1.2 moles

c)

0.24 moles

d)

4.1 moles

193.
A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?
a)
Mg4N3
b)
MgN2
c)
Mg3N2 
d)
MgN
194.

Molecular Formula = C2F6

Choose the correct empirical formula.

a)

CF

b)

C2F6

c)

C3F

d)

CF3

195.
Which pair has the same empirical formula?
a)
NaCrO4 and Na2Cr2O7
b)
C2H4O2 and C6H12O6
c)
C3H6O3 and C2H6O2
d)
CH4 and C2H6
196.

Empirical Formula = CF2

Molecular formula mass = 192 g/mol

Molecular Formula = ?

a)

C4F8

b)

C8F4

c)

C3F6

d)

C2F4

197.

The empirical formula of a substance is CH2O. The molar mass is 180g/mol. What is the molecular formula?

a)

CH2O

b)

C3H6O3

c)

C6H12O6

d)

C12H6O12

198.
What is the empirical formula if you have 81.82% carbon and 18.18% hydrogen?
a)
C3H8
b)
CH4
c)
C2H2
d)
C4H10
199.

Given the following: 42.07g Na, 18.89g P, and 39.04g O, determine the empirical formula.

a)

NaPO2

b)

Na2PO3

c)

Na3PO4

d)

NaPO4

200.

A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?

a)

Mg4N3

b)

MgN2

c)

Mg3N2

d)

MgN

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9th - 12th Grade