Question 1

Atoms of one element cannot be converted to another element by any known method.

Accepted Answer

A) True 
 B)False

Question 2

Iron (III) chloride hexahydrate is used as a coagulant for sewage and industrial wastes. What is its formula?

Accepted Answer

A)  Fe(Cl·6H2O)3 
B)  Fe3Cl·6H2O 
C)  FeCl3(H2O)6 
D)  Fe3Cl(H2O)6 
E)  FeCl3·6H2O 
A)  Fe(Cl·6H2O)3 
B)  Fe3Cl·6H2O 
C)  FeCl3(H2O)6 
D)  Fe3Cl(H2O)6 
E)  FeCl3·6H2O

Question 3

Copper (Cu) is a transition metal.

Accepted Answer

A) True 
 B)False

Question 4

The compound, NaH2PO4, is present in many baking powders. What is its name?

Accepted Answer

A)  sodium biphosphate 
B)  sodium hydrogen phosphate 
C)  sodium dihydrogen phosphate 
D)  sodium hydrophosphate 
E)  sodium dihydride phosphate 
A)  sodium biphosphate 
B)  sodium hydrogen phosphate 
C)  sodium dihydrogen phosphate 
D)  sodium hydrophosphate 
E)  sodium dihydride phosphate

Question 5

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

Accepted Answer

A)  X & Y 
B)  X & R 
C)  Y & R 
D)  Z & R 
E)  X & Z 
A)  X & Y 
B)  X & R 
C)  Y & R 
D)  Z & R 
E)  X & Z

Question 6

The mass of a neutron is equal to the mass of a proton plus the mass of an electron.

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

A)  Dalton 
B)  Gay-Lussac 
C)  Thomson 
D)  Millikan 
E)  Rutherford 
A)  Dalton 
B)  Gay-Lussac 
C)  Thomson 
D)  Millikan 
E)  Rutherford

Question 8

Silicon, which makes up about 25% of Earth's crust by mass, is used widely in the modern electronics industry. It has three naturally occurring isotopes, 28Si, 29Si, and 30Si. Calculate the atomic mass of silicon.

Accepted Answer

A)  29.2252 amu 
B)  28.9757 amu 
C)  28.7260 amu 
D)  28.0855 amu 
E)  27.9801 amu 
A)  29.2252 amu 
B)  28.9757 amu 
C)  28.7260 amu 
D)  28.0855 amu 
E)  27.9801 amu

Question 9

Which of the following ions occurs commonly?

Accepted Answer

A)  P3+ 
B)  Br7+ 
C)  O6+ 
D)  Ca2+ 
E)  K- 
A)  P3+ 
B)  Br7+ 
C)  O6+ 
D)  Ca2+ 
E)  K-

Question 10

Zinc acetate is used in preserving wood and in manufacturing glazes for porcelain. What is its formula?

Accepted Answer

A)  ZnAc2 
B)  ZnCH3COO 
C)  Zn(CH3COO)2 
D)  Zn2CH3COO 
E)  ZnCH3COCH3 
A)  ZnAc2 
B)  ZnCH3COO 
C)  Zn(CH3COO)2 
D)  Zn2CH3COO 
E)  ZnCH3COCH3

Question 11

What is the name of the acid formed when HClO4 liquid is dissolved in water?

Accepted Answer

A)  hydrochloric acid 
B)  perchloric acid 
C)  chloric acid 
D)  chlorous acid 
E)  hydrochlorate acid 
A)  hydrochloric acid 
B)  perchloric acid 
C)  chloric acid 
D)  chlorous acid 
E)  hydrochlorate acid

Question 12

What is the name of Na2O?

Accepted Answer

A)  disodium monoxide 
B)  sodium monoxide 
C)  sodium dioxide 
D)  sodium(I) oxide 
E)  sodium oxide 
A)  disodium monoxide 
B)  sodium monoxide 
C)  sodium dioxide 
D)  sodium(I) oxide 
E)  sodium oxide

Question 13

Silver chloride is used in photographic emulsions. What is its formula?

Accepted Answer

A)  Ag2Cl3 
B)  Ag2Cl 
C)  AgCl3 
D)  AgCl2 
E)  AgCl 
A)  Ag2Cl3 
B)  Ag2Cl 
C)  AgCl3 
D)  AgCl2 
E)  AgCl

Question 14

Which one of the following combinations of names and formulas is incorrect?

Accepted Answer

A)  H3PO4 phosphoric acid 
B)  HNO3 nitric acid 
C)  NaHCO3 sodium carbonate 
D)  H2CO3 carbonic acid 
E)  KOH potassium hydroxide 
A)  H3PO4 phosphoric acid 
B)  HNO3 nitric acid 
C)  NaHCO3 sodium carbonate 
D)  H2CO3 carbonic acid 
E)  KOH potassium hydroxide

Question 15

Chlorine dioxide is a strong oxidizer that is used for bleaching flour and textiles and for purification of water. What is its formula?

Accepted Answer

A)  (ClO)2 
B)  Cl2O 
C)  Cl2O2 
D)  Cl2O4 
E)  ClO2 
A)  (ClO)2 
B)  Cl2O 
C)  Cl2O2 
D)  Cl2O4 
E)  ClO2

Question 16

All neutral atoms of tin have 50 protons and 50 electrons.

Accepted Answer

A) True 
 B)False

Question 17

Ammonium sulfate, (NH4)2SO4, is a fertilizer widely used as a source of nitrogen. Calculate its molecular mass.

Accepted Answer

A)  63.07 amu 
B)  114.10 amu 
C)  118.13 amu 
D)  128.11 amu 
E)  132.13 amu 
A)  63.07 amu 
B)  114.10 amu 
C)  118.13 amu 
D)  128.11 amu 
E)  132.13 amu

Question 18

The compound, BaO, absorbs water and carbon dioxide readily and is used to dry gases and organic solvents. What is its name?

Accepted Answer

A)  barium oxide 
B)  barium(II) oxide 
C)  barium monoxide 
D)  baric oxide 
E)  barium peroxide 
A)  barium oxide 
B)  barium(II) oxide 
C)  barium monoxide 
D)  baric oxide 
E)  barium peroxide

Question 19

The name for HF(g) is

Accepted Answer

A)  hydrofluoric acid. 
B)  hydrogen(I) fluoride. 
C)  hydrogen fluoride. 
D)  hydrogen fluorine. 
E)  fluoric acid. 
A)  hydrofluoric acid. 
B)  hydrogen(I) fluoride. 
C)  hydrogen fluoride. 
D)  hydrogen fluorine. 
E)  fluoric acid.

Question 20

Diiodine pentaoxide is used as an oxidizing agent that converts carbon monoxide to carbon dioxide. What is its chemical formula?

Accepted Answer

A)  I2O5 
B)  IO5 
C)  2IO5 
D)  I5O2 
E)  (IO5)2 
A)  I2O5 
B)  IO5 
C)  2IO5 
D)  I5O2 
E)  (IO5)2

Exam 2: The Components of Matter

Atoms of one element cannot be converted to another element by any known method.

Iron (III) chloride hexahydrate is used as a coagulant for sewage and industrial wastes. What is its formula?

Copper (Cu) is a transition metal.

The compound, NaH2PO4, is present in many baking powders. What is its name?

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

The mass of a neutron is equal to the mass of a proton plus the mass of an electron.

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

Silicon, which makes up about 25% of Earth's crust by mass, is used widely in the modern electronics industry. It has three naturally occurring isotopes, 28Si, 29Si, and 30Si. Calculate the atomic mass of silicon.

Which of the following ions occurs commonly?

Zinc acetate is used in preserving wood and in manufacturing glazes for porcelain. What is its formula?

What is the name of the acid formed when HClO4 liquid is dissolved in water?

What is the name of Na2O?

Silver chloride is used in photographic emulsions. What is its formula?

Which one of the following combinations of names and formulas is incorrect?

Chlorine dioxide is a strong oxidizer that is used for bleaching flour and textiles and for purification of water. What is its formula?

All neutral atoms of tin have 50 protons and 50 electrons.

Ammonium sulfate, (NH4)2SO4, is a fertilizer widely used as a source of nitrogen. Calculate its molecular mass.

The compound, BaO, absorbs water and carbon dioxide readily and is used to dry gases and organic solvents. What is its name?

The name for HF(g) is

Diiodine pentaoxide is used as an oxidizing agent that converts carbon monoxide to carbon dioxide. What is its chemical formula?

Keys to Studying Chemistry Definitions, Units, and Problem Solving

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces Liquids, Solids, and Phase Changes

The Properties of Mixtures Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics Rates and Mechanisms of Chemical Reactions

Equilibrium the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics Entropy, Free Energy, and Reaction Direction

Electrochemistry Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

The compound, NaH₂PO₄, is present in many baking powders. What is its name?

Silicon, which makes up about 25% of Earth's crust by mass, is used widely in the modern electronics industry. It has three naturally occurring isotopes, ²⁸Si, ²⁹Si, and ³⁰Si. Calculate the atomic mass of silicon.

What is the name of the acid formed when HClO₄ liquid is dissolved in water?

What is the name of Na₂O?

Ammonium sulfate, (NH₄)₂SO₄, is a fertilizer widely used as a source of nitrogen. Calculate its molecular mass.