Question 1

The formula for aluminum fluoride is _____.

Accepted Answer

A)  AlF3 
B)  AlF 
C)  Al2F 
D)  AlF4 
E)  AlF2 
A)  AlF3 
B)  AlF 
C)  Al2F 
D)  AlF4 
E)  AlF2

Question 2

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 3

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% 
A)  25.53% 
B)  37.24% 
C)  40.67% 
D)  59.33% 
E)  74.47%

Question 4

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

Accepted Answer

A)  29 
B)  2 
C)  92 
D)  63 
E)  34 
A)  29 
B)  2 
C)  92 
D)  63 
E)  34

Question 5

What charge is likely possible on a monatomic silver cation?

Accepted Answer

A)  2- 
B)  1- 
C)  1+ 
D)  2+ 
E)  3+ 
A)  2- 
B)  1- 
C)  1+ 
D)  2+ 
E)  3+

Question 6

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

Question 7

Arrange the subatomic particles in order of their increasing mass.

Accepted Answer

A)  Electron mass = proton mass = neutron mass 
B)  Electron mass = neutron mass < proton mass 
C)  Electron mass = proton mass < neutron mass 
D)  Electron mass < proton mass < neutron mass 
E)  Electron mass < proton mass = neutron mass 
A)  Electron mass = proton mass = neutron mass 
B)  Electron mass = neutron mass < proton mass 
C)  Electron mass = proton mass < neutron mass 
D)  Electron mass < proton mass < neutron mass 
E)  Electron mass < proton mass = neutron mass

Question 8

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

Accepted Answer

Question 9

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)  Ar 
A)  S 
B)  Cl2 
C)  I2 
D)  H2 
E)  Ar

Question 10

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)2Br 
A)  NH3Br 
B)  NH4Br 
C)  NH3Br2 
D)  NH4Br2 
E)  (NH4)2Br

Question 11

Which of the following atoms contains more protons than neutrons?

Accepted Answer

A)  ${ } _ { 1 } ^ { 1 } \mathrm { H }$ 
B)  ${ } _ { 9 } ^ { 19 } \mathrm {~F}$ 
C)  ${ } _ { 16 } ^ { 34 } \mathrm {~S}$ 
D)  ${ } _ { 12 } ^ { 24 } \mathrm { Mg }$ 
E)  ${ } _ { 2 } ^ { 4 } \mathrm { He }$ 
A)  ${ } _ { 1 } ^ { 1 } \mathrm { H }$ 
B)  ${ } _ { 9 } ^ { 19 } \mathrm {~F}$ 
C)  ${ } _ { 16 } ^ { 34 } \mathrm {~S}$ 
D)  ${ } _ { 12 } ^ { 24 } \mathrm { Mg }$ 
E)  ${ } _ { 2 } ^ { 4 } \mathrm { He }$

Question 12

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

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. 
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.

Question 13

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

Accepted Answer

A)  2A 
B)  3A 
C)  5A 
D)  6A 
E)  7A 
A)  2A 
B)  3A 
C)  5A 
D)  6A 
E)  7A

Question 14

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

Question 15

The correct name for the compound P2F4 is _____.

Accepted Answer

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

Question 16

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

Accepted Answer

A)  ${ } ^ { 112 } \mathrm { Ag }$ 
B)  ${ } ^ { 114 } \mathrm { In }$ 
C)  ${ } ^ { 113 } \mathrm { In }$ 
D)  ${ } ^ { 114 } \mathrm { Cd }$ 
E)  ${ } ^ { 113 } \mathrm { Ag }$ 
A)  ${ } ^ { 112 } \mathrm { Ag }$ 
B)  ${ } ^ { 114 } \mathrm { In }$ 
C)  ${ } ^ { 113 } \mathrm { In }$ 
D)  ${ } ^ { 114 } \mathrm { Cd }$ 
E)  ${ } ^ { 113 } \mathrm { Ag }$

Question 17

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

Accepted Answer

A)  KBr 
B)  MgO 
C)  RbI 
D)  CaBr2 
E)  CsCl 
A)  KBr 
B)  MgO 
C)  RbI 
D)  CaBr2 
E)  CsCl

Question 18

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

Question 19

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

Question 20

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 protons 
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 protons

Exam 3: Atoms, Molecules, and Ions

The formula for aluminum fluoride is _____.

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

Calculate the mass percent of chlorine in magnesium chloride.

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

What charge is likely possible on a monatomic silver cation?

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

Arrange the subatomic particles in order of their increasing mass.

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

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

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

Which of the following atoms contains more protons than neutrons?

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

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

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?

The correct name for the compound P2F4 is _____.

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

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

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.

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

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

Basic Concepts of Chemistry

Lets Review: the Tools of Quantitative Chemistry

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Solid State

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Chemical Reactivity: Equilibria

Principles of Chemical Reactivity: the Chemistry of Acids and Bases

Principles of Chemical Reactivity: Other Aspects of Aqueous Equilibria

Principles of Chemical Reactivity: Entropy and Free Energy

Principles of Chemical Reactivity: Electron Transfer Reactions

Environmental Chemistry: Earths Environment, Energy, and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

Filters

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

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

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

The correct name for the compound P₂F₄ is_____.

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

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