Question 1

Which of the following is a nonmetal?

Accepted Answer

A)  Lithium, Li, Z = 3 
B)  Bromine, Br, Z = 35 
C)  Mercury, Hg, Z = 80 
D)  Bismuth, Bi, Z = 83 
E)  Sodium, Na, Z = 11 
A)  Lithium, Li, Z = 3 
B)  Bromine, Br, Z = 35 
C)  Mercury, Hg, Z = 80 
D)  Bismuth, Bi, Z = 83 
E)  Sodium, Na, Z = 11

Question 2

The formula for sodium sulfide is

Accepted Answer

A)  NaS. 
B)  K2S. 
C)  NaS2. 
D)  Na2S. 
E)  SeS. 
A)  NaS. 
B)  K2S. 
C)  NaS2. 
D)  Na2S. 
E)  SeS.

Question 3

Which of the following is a molecular formula for a compound with an empirical formula of CH?

Accepted Answer

A)  C2H6 
B)  C3H9 
C)  C4H10 
D)  C6H6 
E)  None of the answers is correct. 
A)  C2H6 
B)  C3H9 
C)  C4H10 
D)  C6H6 
E)  None of the answers is correct.

Question 4

Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. What is its formula?

Accepted Answer

A)  KMnO3 
B)  KMnO4 
C)  K2MnO4 
D)  K(MnO4)2 
E)  K2Mn2O7 
A)  KMnO3 
B)  KMnO4 
C)  K2MnO4 
D)  K(MnO4)2 
E)  K2Mn2O7

Question 5

Rutherford's experiment with alpha particle scattering by gold foil established that

Accepted Answer

A)  positive charge not evenly distributed throughout an atom. 
B)  electrons have a negative charge. 
C)  electrons have a positive charge. 
D)  atoms are made of protons, neutrons, and electrons. 
E)  protons are 1840 times heavier than electrons. 
A)  positive charge not evenly distributed throughout an atom. 
B)  electrons have a negative charge. 
C)  electrons have a positive charge. 
D)  atoms are made of protons, neutrons, and electrons. 
E)  protons are 1840 times heavier than electrons.

Question 6

What binary compound would be formed from barium ions and fluoride ions?

Accepted Answer

A)  Ba2F3 
B)  BaF3 
C)  BaF 
D)  Ba2F 
E)  BaF2 
A)  Ba2F3 
B)  BaF3 
C)  BaF 
D)  Ba2F 
E)  BaF2

Question 7

Tetrasulfur dinitride decomposes explosively when heated. What is its formula?

Accepted Answer

A)  S2N4 
B)  S4N2 
C)  4SN2 
D)  S4N 
E)  S2N 
A)  S2N4 
B)  S4N2 
C)  4SN2 
D)  S4N 
E)  S2N

Question 8

Who is credited with measuring the mass/charge ratio of the electron?

Accepted Answer

A)  Dalton 
B)  Chadwick 
C)  Thomson 
D)  Millikan 
E)  Rutherford 
A)  Dalton 
B)  Chadwick 
C)  Thomson 
D)  Millikan 
E)  Rutherford

Question 9

Atoms X, Y, Z, and R have the following nuclear compositions:   Which of the following are isotopes of the same element?

Accepted Answer

A)  I & II 
B)  I & IV 
C)  II & IV 
D)  III & IV 
E)  I & III 
A)  I & II 
B)  I & IV 
C)  II & IV 
D)  III & IV 
E)  I & III

Question 10

The empirical formula of C6H6 is CH.

Accepted Answer

A) True 
 B)False

Question 11

What is the formula for the ionic compound formed by calcium and selenium?

Accepted Answer

A)  CaSe 
B)  Ca2Se 
C)  CaSe2 
D)  Ca3Se 
E)  CaSe3 
A)  CaSe 
B)  Ca2Se 
C)  CaSe2 
D)  Ca3Se 
E)  CaSe3

Question 12

Determine the number of electrons and identify the correct symbol for an atom with 17 protons and 18 neutrons.

Accepted Answer

A)  17 electrons,   
B)  18 electrons,   
C)  17 electrons,   
D)  17 electrons,   
E)  18 electrons,   
A)  17 electrons,   
B)  18 electrons,   
C)  17 electrons,   
D)  17 electrons,   
E)  18 electrons,

Question 13

What is the formula for the ionic compound formed by calcium ions and nitrate ions?

Accepted Answer

A)  Ca3N2 
B)  Ca(NO3)2 
C)  Ca2NO3 
D)  Ca2NO2 
E)  CaNO3 
A)  Ca3N2 
B)  Ca(NO3)2 
C)  Ca2NO3 
D)  Ca2NO2 
E)  CaNO3

Question 14

The molecular formula of a molecular substance is a whole number multiple of its empirical formula.

Accepted Answer

A) True 
 B)False

Question 15

The chemical name for SO32- (aq) is sulfite ion. Therefore, the chemical name of H2SO3 (aq) is

Accepted Answer

A)  dihydrosulfuric acid. 
B)  sulfurous acid. 
C)  dihydrogen sulfite. 
D)  hyposulfurous acid. 
E)  sulfuric acid. 
A)  dihydrosulfuric acid. 
B)  sulfurous acid. 
C)  dihydrogen sulfite. 
D)  hyposulfurous acid. 
E)  sulfuric acid.

Question 16

Millikan's oil-drop experiment

Accepted Answer

A)  established the charge on an electron. 
B)  showed that all oil drops carried the same charge. 
C)  provided support for the nuclear model of the atom. 
D)  suggested that some oil drops carried fractional numbers of electrons. 
E)  suggested the presence of a neutral particle in the atom. 
A)  established the charge on an electron. 
B)  showed that all oil drops carried the same charge. 
C)  provided support for the nuclear model of the atom. 
D)  suggested that some oil drops carried fractional numbers of electrons. 
E)  suggested the presence of a neutral particle in the atom.

Question 17

Lead (Pb) is a main group element.

Accepted Answer

A) True 
 B)False

Question 18

The elements in Group 7A are known by what name?

Accepted Answer

A)  Transition metals 
B)  Halogens 
C)  Alkali metals 
D)  Alkaline earth metals 
E)  Noble gases 
A)  Transition metals 
B)  Halogens 
C)  Alkali metals 
D)  Alkaline earth metals 
E)  Noble gases

Question 19

Which of these compounds is most likely to be ionic?

Accepted Answer

A)  GaAs 
B)  SrBr2 
C)  NO2 
D)  CBr4 
E)  H2O 
A)  GaAs 
B)  SrBr2 
C)  NO2 
D)  CBr4 
E)  H2O

Question 20

Which of these elements is chemically similar to oxygen?

Accepted Answer

A)  Sulfur 
B)  Calcium 
C)  Iron 
D)  Nickel 
E)  Potassium 
A)  Sulfur 
B)  Calcium 
C)  Iron 
D)  Nickel 
E)  Potassium

Exam 2: Atoms, Molecules, and Ions

Which of the following is a nonmetal?

The formula for sodium sulfide is

Which of the following is a molecular formula for a compound with an empirical formula of CH?

Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. What is its formula?

Rutherford's experiment with alpha particle scattering by gold foil established that

What binary compound would be formed from barium ions and fluoride ions?

Tetrasulfur dinitride decomposes explosively when heated. What is its formula?

Who is credited with measuring the mass/charge ratio of the electron?

Atoms X, Y, Z, and R have the following nuclear compositions: Which of the following are isotopes of the same element?

The empirical formula of C6H6 is CH.

What is the formula for the ionic compound formed by calcium and selenium?

Determine the number of electrons and identify the correct symbol for an atom with 17 protons and 18 neutrons.

What is the formula for the ionic compound formed by calcium ions and nitrate ions?

The molecular formula of a molecular substance is a whole number multiple of its empirical formula.

The chemical name for SO32- (aq) is sulfite ion. Therefore, the chemical name of H2SO3 (aq) is

Millikan's oil-drop experiment

Lead (Pb) is a main group element.

The elements in Group 7A are known by what name?

Which of these compounds is most likely to be ionic?

Which of these elements is chemically similar to oxygen?

Chemistry: the Central Science

Stoichiometry: Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy, Free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

The empirical formula of C₆H₆ is CH.

The chemical name for SO₃^2- (aq) is sulfite ion. Therefore, the chemical name of H₂SO₃ (aq) is