Question 1

Which of the following is the correct name for the compound NH4NO3?

Accepted Answer

A)   Ammonia hydrogen nitrate
B)   Ammonia hydrogen nitride
C)   Ammonium nitric acid
D)   Ammonium nitrate
E)   Ammonium nitrideF) C) and E)
G) A) and E)

Question 2

The formula for aluminum fluoride is _____.

Accepted Answer

A)   AlF3
B)   AlF
C)   Al2F
D)   AlF4
E)   AlF2F) B) and D)
G) C) and E)

Question 3

Naturally occurring element X exists in three isotopic forms: X-28 (27.979 u, 90.64% abundance) , X-29 (28.976 u, 4.00% abundance) , and X-30 (29.974 u, 5.36% abundance) . Calculate the atomic weight of X.

Accepted Answer

A)   29.64 u
B)   28.13 u
C)   28.99 u
D)   29.83 u
E)   27.15 uF) A) and B)
G) B) and C)

Question 4

Calculate the mass percent of chlorine in magnesium chloride.

Accepted Answer

A)   25.53%
B)   37.24%
C)   40.67%
D)   59.33%
E)   74.47%F) C) and D)
G) All of the above

Question 5

Which of the following groups of periodic table contains only nonmetals?

Accepted Answer

A)   2A
B)   3A
C)   5A
D)   6A
E)   7AF) A) and B)
G) B) and E)

Question 6

How many neutrons are there in an atom of copper-63 ?

Accepted Answer

A)   29
B)   2
C)   92
D)   63
E)   34F) A) and D)
G) A) and C)

Question 7

How many hydrogen atoms are present in 1.0 g of NH3?

Accepted Answer

A)   0.059 atoms
B)   0.18 atoms
C)   3.5 × 1022 atoms
D)   1.1 × 1023 atoms
E)   1.2 × 1022 atomsF) A) and E)
G) B) and D)

Question 8

Arrange the subatomic particles in order of their increasing mass.

Accepted Answer

A)   Electron mass = proton mass = neutron mass
B)   Electron mass = neutron mass 
C)   Electron mass = proton mass 
D)   Electron mass 
E)   Electron mass < proton mass = neutron massF) None of the above
G) All of the above

Question 9

William Crookes was the first to observe particles produced from a cathode ray tube. These particles are known as ________.

Accepted Answer

The answer of William Crookes was the first to observe...

Question 10

Which of the following ionic compounds has the highest melting point?

Accepted Answer

A)   KBr
B)   MgO
C)   RbI
D)   CaBr2
E)   CsClF) A) and D)
G) A) and B)

Question 11

An element consists of three isotopes. The abundance of one isotope is 92.21% and its atomic mass is 27.97693 u. The abundance of the second isotope is 4.70% and its atomic mass is 28.97649 u. The atomic mass of the third isotope is 29.97376 u. What is the atomic weight of the element?

Accepted Answer

A)   28.09 u
B)   28.98 u
C)   28.96 u
D)   29.87 u
E)   29.07 uF) A) and B)
G) C) and D)

Question 12

Which of the following atomic symbols represents an isotope of  113Cd{ } ^ { 113 } \mathrm { Cd }113Cd  ?

Accepted Answer

A)    112Ag{ } ^ { 112 } \mathrm { Ag }112Ag 
B)    114In{ } ^ { 114 } \mathrm { In }114In 
C)    113In{ } ^ { 113 } \mathrm { In }113In 
D)    114Cd{ } ^ { 114 } \mathrm { Cd }114Cd 
E)    113Ag{ } ^ { 113 } \mathrm { Ag }113AgF) A) and B)
G) All of the above

Question 13

The correct name for the compound P2F4 is _____.

Accepted Answer

A)   diphosphorus tetrafluoride
B)   phosphorus fluoride
C)   diphosphide tetrafluoride
D)   diphosphorus tetrafluorine
E)   phosphorus tetrafluorineF) C) and E)
G) A) and B)

Question 14

Which of the following atoms contains more protons than neutrons?

Accepted Answer

A)    11H{ } _ { 1 } ^ { 1 } \mathrm { H }11​H 
B)    919 F{ } _ { 9 } ^ { 19 } \mathrm {~F}919​ F 
C)    1634 S{ } _ { 16 } ^ { 34 } \mathrm {~S}1634​ S 
D)    1224Mg{ } _ { 12 } ^ { 24 } \mathrm { Mg }1224​Mg 
E)    24He{ } _ { 2 } ^ { 4 } \mathrm { He }24​HeF) B) and E)
G) B) and C)

Question 15

Which of the following statements is true concerning  16O{ } ^ { 16 } \mathrm { O }16O  and  17O{ } ^ { 17 } \mathrm { O }17O  ?

Accepted Answer

A)   They have the same number of neutrons.
B)   They are isotopes.
C)   They have the same relative atomic mass.
D)   They have the same mass number.
E)   They have different chemical properties. F) None of the above
G) C) and E)

Question 16

Pure oxygen can exist as O2 or O3. Elements that exist in more than one distinct form are called _____.

Accepted Answer

Question 17

Atomic number is equal to the _____ in the nucleus of an atom.

Accepted Answer

A)   number of electrons
B)   number of protons
C)   number of protons minus the number of neutrons
D)   sum of the number of electrons and neutrons
E)   sum of the number of neutrons and protonsF) B) and E)
G) A) and B)

Question 18

Which of the following elements is present in the third period of group 7A?

Accepted Answer

A)   S
B)   Cl2
C)   I2
D)   H2
E)   ArF) A) and B)
G) A) and C)

Question 19

What is the formula for the compound that is formed of ammonium and bromide ions?

Accepted Answer

A)   NH3Br
B)   NH4Br
C)   NH3Br2
D)   NH4Br2
E)   (NH4) 2BrF) B) and D)
G) A) and E)

Question 20

What charge is likely possible on a monatomic silver cation?

Accepted Answer

A)   2-
B)   1-
C)   1+
D)   2+
E)   3+F) C) and E)
G) C) and D)

Exam 3: Atoms, Molecules, and Ions

Which of the following atomic symbols represents an isotope of 113Cd{ } ^ { 113 } \mathrm { Cd }113Cd ?

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Which of the following statements is true concerning 16O{ } ^ { 16 } \mathrm { O }16O and 17O{ } ^ { 17 } \mathrm { O }17O ?

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Pure oxygen can exist as O2 or O3. Elements that exist in more than one distinct form are called _____.

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How many neutrons are there in an atom of copper-63 ?

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Arrange the subatomic particles in order of their increasing mass.

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Atomic number is equal to the _____ in the nucleus of an atom.

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Which of the following atoms contains more protons than neutrons?

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What is the formula for the compound that is formed of ammonium and bromide ions?

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William Crookes was the first to observe particles produced from a cathode ray tube. These particles are known as ________.

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Which of the following groups of periodic table contains only nonmetals?

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How many hydrogen atoms are present in 1.0 g of NH3?

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The formula for aluminum fluoride is _____.

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Which of the following elements is present in the third period of group 7A?

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What charge is likely possible on a monatomic silver cation?

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An element consists of three isotopes. The abundance of one isotope is 92.21% and its atomic mass is 27.97693 u. The abundance of the second isotope is 4.70% and its atomic mass is 28.97649 u. The atomic mass of the third isotope is 29.97376 u. What is the atomic weight of the element?

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The correct name for the compound P2F4 is _____.

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Naturally occurring element X exists in three isotopic forms: X-28 (27.979 u, 90.64% abundance) , X-29 (28.976 u, 4.00% abundance) , and X-30 (29.974 u, 5.36% abundance) . Calculate the atomic weight of X.

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Which of the following ionic compounds has the highest melting point?

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Calculate the mass percent of chlorine in magnesium chloride.

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Which of the following is the correct name for the compound NH4NO3?

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Which of the following atomic symbols represents an isotope of ${ } ^ { 113 } \mathrm { Cd }$ ?

Correct Answer
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Which of the following statements is true concerning ${ } ^ { 16 } \mathrm { O }$ and ${ } ^ { 17 } \mathrm { O }$ ?

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Pure oxygen can exist as O₂ or O₃. Elements that exist in more than one distinct form are called _____.

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How many hydrogen atoms are present in 1.0 g of NH₃?

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The correct name for the compound P₂F₄ is_____.

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Which of the following is the correct name for the compound NH₄NO₃?

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