Introductory Chemistry 3rd edition


Access is contingent on use of this textbook in the instructor's classroom.

Academic Term Homework
Higher Education Single Term $29.95
High School $10.50

Online price per student per course or lab, bookstore price varies. Access cards can be packaged with most any textbook, please see your textbook rep or contact WebAssign

  • Chapter 1: The Chemical World
    • 1: Questions (9)
    • 1: Problems (3)
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 2: Measurement and Problem Solving
    • 2: Questions
    • 2: Scientific Notation (4)
    • 2: Significant Figures (3)
    • 2: Rounding (3)
    • 2: Significant Figures in Calculations (5)
    • 2: Unit Conversion (9)
    • 2: Units Raised to a Power (3)
    • 2: Density (4)
    • 2: Cumulative Problems (6)
    • 2: Highlight Problems
    • WebAssign Answer Entry Tutorials (1)
    • Extra Exercises

  • Chapter 3: Matter and Energy
    • 3: Questions
    • 3: Classifying Matter (2)
    • 3: Physical and Chemical Properties and Physical and Chemical Changes (2)
    • 3: The Conservation of Mass (3)
    • 3: Conversion of Energy Units (4)
    • 3: Energy and Chemical and Physical Change
    • 3: Converting between Temperature Scales (3)
    • 3: Energy, Heat Capacity, and Temperature Changes (6)
    • 3: Cumulative Problems (10)
    • 3: Highlight Problems
    • WebAssign Answer Entry Tutorials
    • Extra Exercises (1)

  • Chapter 4: Atoms and Elements
    • 4: Questions
    • 4: Atomic and Nuclear Theory
    • 4: Protons, Neutrons, and Electrons (4)
    • 4: Elements, Symbols, and Names (5)
    • 4: The Periodic Table (9)
    • 4: Ions (6)
    • 4: Isotopes (4)
    • 4: Atomic Mass (3)
    • 4: Cumulative Problems (3)
    • 4: Highlight Problems
    • WebAssign Answer Entry Tutorials (1)
    • Extra Exercises

  • Chapter 5: Molecules and Compounds
    • 5: Questions
    • 5: Constant Composition of Compounds (3)
    • 5: Chemical Formulas (3)
    • 5: Molecular View of Elements and Compounds (5)
    • 5: Writing Formulas for Ionic Compounds (2)
    • 5: Naming Ionic Compounds (6)
    • 5: Naming Molecular Compounds (3)
    • 5: Naming Acids (2)
    • 5: Formula Mass (2)
    • 5: Cumulative Problems (4)
    • 5: Highlight Problems
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 6: Chemical Composition
    • 6: Questions
    • 6: The Mole Concept (13)
    • 6: Chemical Formulas as Conversion Factors (4)
    • 6: Mass Percent Composition (3)
    • 6: Mass Percent Composition from Chemical Formula (2)
    • 6: Calculating Empirical Formulas (3)
    • 6: Calculating Molecular Formulas (1)
    • 6: Cumulative Problems (8)
    • 6: Highlight Problems
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 7: Chemical Reactions
    • 7: Questions
    • 7: Evidence of Chemical Reactions (2)
    • 7: Writing and Balancing Chemical Equations (7)
    • 7: Solubility (2)
    • 7: Precipitation Reactions (2)
    • 7: Ionic and Net Ionic Equations (2)
    • 7: Acid-Base and Gas Evolution Reactions (2)
    • 7: Oxidation-Reduction and Combustion (3)
    • 7: Classifying Chemical Reactions by What Atoms Do (1)
    • 7: Cumulative Problems (10)
    • 7: Highlight Problems
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 8: Quantities in Chemical Reactions
    • 8: Questions
    • 8: Mole-to-Mole Conversions (7)
    • 8: Mass-to-Mass Conversions (6)
    • 8: Limiting Reactant, Theoretical Yield, and Percent Yield (10)
    • 8: Enthalpy and Stoichiometry of ΔHrxn (1)
    • 8: Cumulative Problems (6)
    • 8: Highlight Problems (2)
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 9: Electrons in Atoms and the Periodic Table
    • 9: Questions
    • 9: Wavelength, Energy, and Frequency of Electromagnetic Radiation (4)
    • 9: The Bohr Model (1)
    • 9: The Quantum-Mechanical Model (1)
    • 9: Electron Configurations (4)
    • 9: Valence Electrons and Core Electrons (3)
    • 9: Electron Configurations and the Periodic Table (6)
    • 9: Periodic Trends (6)
    • 9: Cumulative Problems (5)
    • 9: Highlight Problems (1)
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 10: Chemical Bonding
    • 10: Questions
    • 10: Writing Lewis Structures for Elements (8)
    • 10: Lewis Structures for Ionic Compounds (8)
    • 10: Lewis Structures for Covalent Compounds (9)
    • 10: Predicting the Shapes of Molecules (8)
    • 10: Electronegativity and Polarity (8)
    • 10: Cumulative Problems (4)
    • 10: Highlight Problems
    • WebAssign Answer Entry Tutorials (2)
    • Extra Exercises

  • Chapter 11: Gases
    • 11: Questions
    • 11: Converting between Pressure Units (3)
    • 11: Simple Gas Laws (3)
    • 11: The Combined Gas Law (3)
    • 11: The Ideal Gas Law (6)
    • 11: Partial Pressure (3)
    • 11: Molar Volume (3)
    • 11: Gases in Chemical Reactions (3)
    • 11: Cumulative Problems (7)
    • 11: Highlight Problems (1)
    • WebAssign Answer Entry Tutorials
    • Extra Exercises (1)

  • Chapter 12: Liquids, Solids, and Intermolecular Forces
    • 12: Questions
    • 12: Evaporation, Condensation, Melting, and Freezing
    • 12: Heat of Vaporization and Heat of Fusion (9)
    • 12: Intermolecular Forces (3)
    • 12: Types of Solids (5)
    • 12: Cumulative Problems (6)
    • 12: Highlight Problems
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 13: Solutions
    • 13: Questions
    • 13: Solutions (1)
    • 13: Solids Dissolved in Water (1)
    • 13: Gases Dissolved in Water
    • 13: Mass Percent (7)
    • 13: Molarity (7)
    • 13: Solution Dilution (2)
    • 13: Solution Stoichiometry (4)
    • 13: Molality, Freezing Point Depression, and Boiling Point Elevation (3)
    • 13: Cumulative Problems (8)
    • 13: Highlight Problems
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 14: Acids and Bases
    • 14: Questions
    • 14: Acid and Base Definitions (5)
    • 14: Acid-Base Reactions (1)
    • 14: Acid-Base Titrations (3)
    • 14: Strong and Weak Acids and Bases (2)
    • 14: Acidity, Basicity, and Kw (2)
    • 14: pH (6)
    • 14: pOH
    • 14: Buffers and Acid Rain
    • 14: Cumulative Exercises (4)
    • 14: Highlight Problems (1)
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 15: Chemical Equilibrium
    • 15: Questions
    • 15: The Rate of Reaction
    • 15: The Equilibrium Constant (2)
    • 15: Calculating and Using Equilibrium Constants (3)
    • 15: Le Châtelier's Principle (5)
    • 15: The Solubility-Product Constant (4)
    • 15: Cumulative Problems (5)
    • 15: Highlight Problems
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 16: Oxidation and Reduction
    • 16: Questions
    • 16: Oxidation and Reduction (2)
    • 16: Oxidation States (4)
    • 16: Balancing Redox Reactions (2)
    • 16: The Activity Series
    • 16: Batteries, Electrochemical Cells, and Electrolysis (1)
    • 16: Corrosion
    • 16: Cumulative Problems (4)
    • 16: Highlight Problems
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 17: Radioactivity and Nuclear Chemistry
    • 17: Questions
    • 17: Isotopic and Nuclear Particle Symbols (4)
    • 17: Radioactive Decay (5)
    • 17: Half-Life (5)
    • 17: Radiocarbon Dating (2)
    • 17: Fission and Fusion (2)
    • 17: Cumulative Problems (6)
    • 17: Highlight Problems (4)
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 18: Organic Chemistry
    • 18: Questions
    • 18: Hydrocarbons (2)
    • 18: Alkanes (9)
    • 18: Alkenes and Alkynes (5)
    • 18: Hydrocarbon Reactions (4)
    • 18: Aromatic Hydrocarbons (4)
    • 18: Functional Groups (3)
    • 18: Alcohols (3)
    • 18: Ethers (1)
    • 18: Aldehydes and Ketones (1)
    • 18: Carboxylic Acids and Esters (2)
    • 18: Amines (1)
    • 18: Polymers
    • 18: Cumulative Problems (4)
    • 18: Highlight Problems
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

  • Chapter 19: Biochemistry
    • 19: Questions
    • 19: Carbohydrates
    • 19: Lipids (1)
    • 19: Amino Acids and Proteins (2)
    • 19: Nucleic Acids (1)
    • 19: Cumulative Problems (4)
    • 19: Highlight Problems
    • WebAssign Answer Entry Tutorials
    • Extra Exercises

Questions Available within WebAssign

Most questions from this textbook are available in WebAssign. The online questions are identical to the textbook questions except for minor wording changes necessary for Web use. Whenever possible, variables, numbers, or words have been randomized so that each student receives a unique version of the question. This list is updated nightly.

Question Group Key
E - Exercises
XE - Extra Exercises
T - Tutorials & Templates


Question Availability Color Key
BLACK questions are available now
GRAY questions are under development


Group Quantity Questions
Chapter 1: The Chemical World
1.E 12 001 002 004 006 008 009 010 012 013 016 018 020
Chapter 2: Measurement and Problem Solving
2.E 37 030 032 034 036 040 042 044 048 050 052 056 058 060 062 064 068 070 072 074 078 080 081 082 084 086 088 090 094 096 098 100 102 104 106 110 112 114
2.T 1 001
Chapter 3: Matter and Energy
3.E 30 030 032 036 040 044 046 048 050 052 056 058 064 068 070 072 074 076 078 080 084 088 090 092 094 096 097 099 100 102 103
3.XE 1 001
Chapter 4: Atoms and Elements
4.E 34 036 038 040 042 044 046 048 050 052 054 056 058 060 062 064 066 068 070 074 076 078 082 084 086 088 090 092 094 098 100 102 108 110 118
4.T 1 001
Chapter 5: Molecules and Compounds
5.E 30 024 026 028 030 036 038 040 042 044 046 048 050 052 056 058 060 062 064 066 068 070 072 074 076 078 080 084 092 094 096
Chapter 6: Chemical Composition
6.E 34 018 020 026 028 030 036 038 040 042 046 048 052 054 058 062 066 068 070 072 074 078 080 088 090 092 096 100 102 104 108 110 116 120 123
Chapter 7: Chemical Reactions
7.E 31 030 032 038 040 048 052 054 056 058 062 066 068 070 074 076 084 086 088 090 092 094 098 100 102 104 106 110 111 112 113 114
Chapter 8: Quantities in Chemical Reactions
8.E 32 018 020 024 026 028 030 032 034 036 038 040 042 044 046 048 050 052 056 058 060 062 064 066 074 078 080 082 084 086 092 099 100
Chapter 9: Electrons in Atoms and the Periodic Table
9.E 31 032 034 036 038 044 048 052 054 056 058 060 062 064 066 068 070 072 076 078 080 082 084 086 088 090 092 096 104 111 112 115
Chapter 10: Chemical Bonding
10.E 45 026 026.mrv 028 028.mrv 030 034 034.mrv 036 038 040 040.mrv 042 044 044.mrv 046 046.mrv 050.mrv 052.mrv 054.mrv 056.mrv 058.mrv 058.mrv.alt 060.mrv 060.mrv.alt 062.mrv 064 066 068 070 072 074 076 078 080 082 084 086 088 090 092 094 096 096.mrv 112 112.mrv
10.T 2 001 002
Chapter 11: Gases
11.E 32 028 032 034 038 046 052 058 060 062 064 066 070 072 074 076 078 080 084 088 090 092 096 098 102 106 108 110 112 116 120 126 132
11.XE 1 001
Chapter 12: Liquids, Solids, and Intermolecular Forces
12.E 23 051 052 053 054 056 057 058 060 062 064 066 068 078 080 082 084 086 088 090 092 094 096 102
Chapter 13: Solutions
13.E 33 026 034 044 046 050 052 054 056 060 062 064 066 068 070 072 074 084 088 092 094 096 098 100 104 108 114 116 118 120 122 124 126 130
Chapter 14: Acids and Bases
14.E 24 036 038 040 042 044 048 054 056 058 060 064 068 072 074 076 078 080 082 084 108 112 120 124 126
Chapter 15: Chemical Equilibrium
15.E 19 046 052 056 060 062 066 068 074 076 078 084 086 090 092 094 096 102 106 108
Chapter 16: Oxidation and Reduction
16.E 13 036 038 048 050 052 054 066 068 090 100 102 106 110
Chapter 17: Radioactivity and Nuclear Chemistry
17.E 28 054 056 058 060 062 064 066 068 070 072 074 075 076 078 082 084 086 088 090 092 094 096 099 100 101 102 103 104
Chapter 18: Organic Chemistry
18.E 39 036 038 040 040.mrv 042 042.mrv 044.mrv 046 048 048.mrv 050 056.mrv 058 060 062 062.mrv 068 070.mrv 072.mrv 074.mrv 080 082 084 084.mrv 086 087 088 090 092 092.mrv 094.mrv 096.mrv 098 098.mrv 100.mrv 106 108 112.mrv 114
Chapter 19: Biochemistry
19.E 8 064.mrv 068.mrv 070.mrv 078 086 090 092 096
Total 541