WebAssign Companion to Wertz - Chemistry - Quantitative Science 3/e 1st edition

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

  • Chapter T: WebAssign Answer Templates and Tutorials
    • T: WebAssign Answer Templates and Tutorials (4)

  • Chapter 1: Stoichiometry
    • 1.1: The Mole (8)
    • 1.2: Determining Chemical Formulas (9)
    • 1.3: Substance or Composition Formulas (1)
    • 1.4: Balancing Chemical Equations (1)
    • 1.5: Reaction Stoichiometry (9)
    • 1: Concept Mastery (13)
    • 1: Exercises (23)
    • 1: Stand Alone Tutorials (64)

  • Chapter 2: Solutions
    • 2.1: Concentration Units (10)
    • 2.2: Changing Concentration Units (1)
    • 2.3: Dilutions (2)
    • 2.4: Determining Concentrations
    • 2.5: Colligative Properties (11)
    • 2.6: Colloids (5)
    • 2: Concept Mastery (10)
    • 2: Exercises (20)
    • 2: Stand Alone Tutorials (59)

  • Chapter 3: First Law of Thermodynamics
    • 3.1: Some Definitions and Conventions
    • 3.2: Work, Heat, and Energy (5)
    • 3.3: The First Law of Thermodynamics (7)
    • 3.4: Enthalpy (1)
    • 3.5: Standard States and Properties of Enthalpy Change
    • 3.6: Hess's Law of Heat Summation (3)
    • 3.7: Enthalpies (or Heats) of Formation (2)
    • 3.8: Bond Dissociation Energies
    • 3.9: Calorimetry (1)
    • 3.10: Combustion: Food as Fuel (1)
    • 3: Concept Mastery (14)
    • 3: Exercises (21)
    • 3: Stand Alone Tutorials (55)

  • Chapter 4: Thermodynamics and Equilibria
    • 4.1: Entropy (7)
    • 4.2: Second and Third Laws of Thermodynamics (1)
    • 4.3: Determining Entropy Changes (1)
    • 4.4: Free Energy (1)
    • 4.5: Determining Free Energy Changes
    • 4.6: Standard Free Energy and Equilibrium (5)
    • 4.7: Temperature Dependence of ΔG, ΔG°, and K
    • 4.8: Coupled Reactions
    • 4: Concept Mastery (11)
    • 4: Exercises (14)
    • 4: Stand Alone Tutorials (40)

  • Chapter 5: Chemical Equilibrium
    • 5.1: The Equilibrium Constant (16)
    • 5.2: Le Châtelier's Principle (7)
    • 5.3: Using the Equilibrium Constant (2)
    • 5: Concept Mastery (11)
    • 5: Exercises (14)
    • 5: Stand Alone Tutorials (50)

  • Chapter 6: Acids and Bases
    • 6.1: Autoionization of Water (5)
    • 6.2: The p-Scale (10)
    • 6.3: Strong Acids (3)
    • 6.4: Weak Acids (6)
    • 6.5: Polyprotic Acids
    • 6.6: Strong Bases (4)
    • 6.7: Weak Bases (7)
    • 6.8: Salts of Weak Acids and Bases (1)
    • 6.9: Amphiprotic Salts (2)
    • 6: Concept Mastery (11)
    • 6: Exercises (20)
    • 6: Stand Alone Tutorials (69)

  • Chapter 7: Mixtures of Acids and Bases
    • 7.1: The Common-Ion Effect
    • 7.2: Buffers (8)
    • 7.3: Acid-Base Composition from Reaction Amounts (10)
    • 7.4: Acid-Base Composition from Equilibrium pH
    • 7.5: Acid-Base Indicators (3)
    • 7: Concept Mastery (8)
    • 7: Exercises (4)
    • 7: Stand Alone Tutorials (33)

  • Chapter 8: Equilibria Containing Metal Ions
    • 8.1: Acid-Base Equilibria
    • 8.2: Dissolution and the Solubility-Product Constant (3)
    • 8.3: Precipitation and the Separation of Ions (2)
    • 8.4: Complex Ions (1)
    • 8.5: Competing or Simultaneous Equilibria
    • 8: Concept Mastery (2)
    • 8: Exercises (2)
    • 8: Stand Alone Tutorials (10)

  • Chapter 9: Electrochemistry
    • 9.1: Review of Redox Processes
    • 9.2: Balancing Redox Reactions
    • 9.3: Free Energy and Electrochemical Cells (5)
    • 9.4: The Effect of Concentration on Cell Potential (1)
    • 9.5: The Electrolytic Cell
    • 9.6: Predicting the Products of Electrolysis
    • 9.7: Stoichiometry of Electrochemistry (1)
    • 9: Concept Mastery (6)
    • 9: Exercises (14)
    • 9: Stand Alone Tutorials (27)

  • Chapter 10: Chemical Kinetics
    • 10.1: Reaction Rates (12)
    • 10.2: Rate Laws (9)
    • 10.3: Determining Rate Laws (12)
    • 10.4: Reaction Mechanisms and Rate Laws (8)
    • 10.5: Effect of Temperature on Reaction Rates (11)
    • 10.6: Catalysis (9)
    • 10: Concept Mastery (13)
    • 10: Exercises (23)
    • 10: Stand Alone Tutorials (97)

  • Chapter 11: Nuclear Chemistry
    • 11.1: The Nucleus (5)
    • 11.2: Nuclear Reactions and Radioactivity (9)
    • 11.3: Kinetics of Radioactivity (2)
    • 11.4: Nuclear Radiation and Living Tissue (3)
    • 11.5: Nuclear Fission (4)
    • 11.6: Nuclear Fusion (2)
    • 11.7: Origin of the Heavy Elements
    • 11: Concept Mastery (13)
    • 11: Exercises (23)
    • 11: Stand Alone Tutorials (61)

  • Chapter A: Reporting Quantitative Results
    • A.1: Precision
    • A.2: Significant Figures (3)
    • A.3: Reporting Answers to Calculations (1)
    • A.4: Rounding Errors
    • A: Content Mastery (4)
    • A: Exercises (7)
    • A: Stand Alone Tutorials (15)

  • Chapter F: Balancing Redox Reactions
    • F.1: The Half-Reaction Method (2)
    • F.2: The Oxidation State Change Method (1)
    • F: Content Mastery (1)
    • F: Exercises (2)
    • F: Stand Alone Tutorials (6)

  • Chapter FE: Final Exam Questions
    • FE: Final Exam Questions (24)
    • FE: Stand Alone Tutorials (24)

In addition to questions direct from your required course text, WebAssign adopters of the 2010 edition of Chemistry - A Quantitative Science, by Wertz, can also have access to this exclusive Companion collection of questions.

The Companion includes over 1400 peer-reviewed questions that have been developed by expert chemistry educators. The questions cover every concept in the course and have been organized to match the table of contents of your required textbook, making it easier for you to augment your assignments with additional questions and learning tools exclusive to the WebAssign system.

The question collection is composed of a variety of problem types to:

  • Exercises focus on a broader content area, similar to traditional homework
  • Skill Questions provide focused practice and support on a particular skill
  • Concept Mastery Questions assess student ability to connect concepts in the framework of a larger problem
  • Final Exam Questions assess student ability to integrate a wide range of chemical concepts in a single question, suitable for final exams or year-end reviews

Questions in the collection include the following features:

  • Integrated feedback for every incorrect answer
  • Links to stepped-out concept-mastery tutorials for every question
  • Deep Help Links to stepped-out skill tutorials
  • Detailed solutions for all questions available to students at your discretion
  • Many Concept Mastery Questions include a problem-solving strategy video
  • A self-paced Algebra-Review Personal Study Plan to strengthen student prerequisite math skills

For more information on adding the Companion to your WebAssign course, contact us today.

Question Group Key
CM - Concept Mastery
EX - Exercises
FE - Final Exam Questions
T - Tutorials


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


Group Quantity Questions
Chapter A: Reporting Quantitative Results
A.CM 4 001 002 003 004
A.EX 7 001 002 003 004 005 006 007
A.SA 15 CM.001 CM.002 CM.003 CM.004 EX.001 EX.002 EX.003 EX.004 EX.005 EX.006 EX.007 2.001 2.002 2.003 3.001
A.2 3 001 002 003
A.3 1 001
Chapter F: Balancing Redox Reactions
F.CM 1 001
F.EX 2 001 002
F.SA 6 CM.001 EX.001 EX.002 1.001 1.002 2.001
F.1 2 001 002
F.2 1 001
Chapter FE: Final Exam Questions
FE.P 24 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024
FE.SA 24 P.001 P.002 P.003 P.004 P.005 P.006 P.007 P.008 P.009 P.010 P.011 P.012 P.013 P.014 P.015 P.016 P.017 P.018 P.019 P.020 P.021 P.022 P.023 P.024
Chapter T: WebAssign Answer Templates and Tutorials
T.LewisStructures 1 004
T.MarvinSketch 1 003
T.SigFigs 1 001
T.chemPad 1 002
Chapter 1: Stoichiometry
1.CM 13 001 002 003 004 005 006 007 008 009 010 011 012 013
1.EX 23 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023
1.SA 64 CM.001 CM.002 CM.003 CM.004 CM.005 CM.006 CM.007 CM.008 CM.009 CM.010 CM.011 CM.012 CM.013 EX.001 EX.002 EX.003 EX.004 EX.005 EX.006 EX.007 EX.008 EX.009 EX.010 EX.011 EX.012 EX.013 EX.014 EX.015 EX.016 EX.017 EX.018 EX.019 EX.020 EX.021 EX.022 EX.023 1.001 1.002 1.003 1.004 1.005 1.006 1.007 1.008 2.001 2.002 2.003 2.004 2.005 2.006 2.007 2.008 2.009 3.001 4.001 5.001 5.002 5.003 5.004 5.005 5.006 5.007 5.008 5.009
1.1 8 001 002 003 004 005 006 007 008
1.2 9 001 002 003 004 005 006 007 008 009
1.3 1 001
1.4 1 001
1.5 9 001 002 003 004 005 006 007 008 009
Chapter 2: Solutions
2.CM 10 001 002 003 004 005 006 007 008 009 010
2.EX 20 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020
2.SA 59 CM.001 CM.002 CM.003 CM.004 CM.005 CM.006 CM.007 CM.008 CM.009 CM.010 EX.001 EX.002 EX.003 EX.004 EX.005 EX.006 EX.007 EX.008 EX.009 EX.010 EX.011 EX.012 EX.013 EX.014 EX.015 EX.016 EX.017 EX.018 EX.019 EX.020 1.001 1.002 1.003 1.004 1.005 1.006 1.007 1.008 1.009 1.010 2.001 3.001 3.002 5.001 5.002 5.003 5.004 5.005 5.006 5.007 5.008 5.009 5.010 5.011 6.001 6.002 6.003 6.004 6.005
2.1 10 001 002 003 004 005 006 007 008 009 010
2.2 1 001
2.3 2 001 002
2.5 11 001 002 003 004 005 006 007 008 009 010 011
2.6 5 001 002 003 004 005
Chapter 3: First Law of Thermodynamics
3.CM 14 001 002 003 004 005 006 007 008 009 010 011 012 013 014
3.EX 21 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021
3.SA 55 CM.001 CM.002 CM.003 CM.004 CM.005 CM.006 CM.007 CM.008 CM.009 CM.010 CM.011 CM.012 CM.013 CM.014 EX.001 EX.002 EX.003 EX.004 EX.005 EX.006 EX.007 EX.008 EX.009 EX.010 EX.011 EX.012 EX.013 EX.014 EX.015 EX.016 EX.017 EX.018 EX.019 EX.020 EX.021 2.001 2.002 2.003 2.004 2.005 3.001 3.002 3.003 3.004 3.005 3.006 3.007 4.001 6.001 6.002 6.003 7.001 7.002 9.001 10.001
3.2 5 001 002 003 004 005
3.3 7 001 002 003 004 005 006 007
3.4 1 001
3.6 3 001 002 003
3.7 2 001 002
3.9 1 001
3.10 1 001
Chapter 4: Thermodynamics and Equilibria
4.CM 11 001 002 003 004 005 006 007 008 009 010 011
4.EX 14 001 002 003 004 005 006 007 008 009 010 011 012 013 014
4.SA 40 CM.001 CM.002 CM.003 CM.004 CM.005 CM.006 CM.007 CM.008 CM.009 CM.010 CM.011 EX.001 EX.002 EX.003 EX.004 EX.005 EX.006 EX.007 EX.008 EX.009 EX.010 EX.011 EX.012 EX.013 EX.014 1.001 1.002 1.003 1.004 1.005 1.006 1.007 2.001 3.001 4.001 6.001 6.002 6.003 6.004 6.005
4.1 7 001 002 003 004 005 006 007
4.2 1 001
4.3 1 001
4.4 1 001
4.6 5 001 002 003 004 005
4.9 001 001.SA
Chapter 5: Chemical Equilibrium
5.CM 11 001 002 003 004 005 006 007 008 009 010 011
5.EX 14 001 002 003 004 005 006 007 008 009 010 011 012 013 014
5.SA 50 CM.001 CM.002 CM.003 CM.004 CM.005 CM.006 CM.007 CM.008 CM.009 CM.010 CM.011 EX.001 EX.002 EX.003 EX.004 EX.005 EX.006 EX.007 EX.008 EX.009 EX.010 EX.011 EX.012 EX.013 EX.014 1.001 1.002 1.003 1.004 1.005 1.006 1.007 1.008 1.009 1.010 1.011 1.012 1.013 1.014 1.015 1.016 2.001 2.002 2.003 2.004 2.005 2.006 2.007 3.001 3.002
5.1 16 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016
5.2 7 001 002 003 004 005 006 007
5.3 2 001 002
Chapter 6: Acids and Bases
6.CM 11 001 002 003 004 005 006 007 008 009 010 011
6.EX 20 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020
6.SA 69 CM.001 CM.002 CM.003 CM.004 CM.005 CM.006 CM.007 CM.008 CM.009 CM.010 CM.011 EX.001 EX.002 EX.003 EX.004 EX.005 EX.006 EX.007 EX.008 EX.009 EX.010 EX.011 EX.012 EX.013 EX.014 EX.015 EX.016 EX.017 EX.018 EX.019 EX.020 1.001 1.002 1.003 1.004 1.005 2.001 2.002 2.003 2.004 2.005 2.006 2.007 2.008 2.009 2.010 3.001 3.002 3.003 4.001 4.002 4.003 4.004 4.005 4.006 6.001 6.002 6.003 6.004 7.001 7.002 7.003 7.004 7.005 7.006 7.007 8.001 9.001 9.002
6.1 5 001 002 003 004 005
6.2 10 001 002 003 004 005 006 007 008 009 010
6.3 3 001 002 003
6.4 6 001 002 003 004 005 006
6.6 4 001 002 003 004
6.7 7 001 002 003 004 005 006 007
6.8 1 001
6.9 2 001 002
Chapter 7: Mixtures of Acids and Bases
7.CM 8 001 002 003 004 005 006 007 008
7.EX 4 001 002 003 004
7.SA 33 CM.001 CM.002 CM.003 CM.004 CM.005 CM.006 CM.007 CM.008 EX.001 EX.002 EX.003 EX.004 2.001 2.002 2.003 2.004 2.005 2.006 2.007 2.008 3.001 3.002 3.003 3.004 3.005 3.006 3.007 3.008 3.009 3.010 5.001 5.002 5.003
7.2 8 001 002 003 004 005 006 007 008
7.3 10 001 002 003 004 005 006 007 008 009 010
7.5 3 001 002 003
Chapter 8: Equilibria Containing Metal Ions
8.CM 2 001 002
8.EX 2 001 002
8.SA 10 CM.001 CM.002 EX.001 EX.002 2.001 2.002 2.003 3.001 3.002 4.001
8.2 3 001 002 003
8.3 2 001 002
8.4 1 001
Chapter 9: Electrochemistry
9.CM 6 001 002 003 004 005 006
9.EX 14 001 002 003 004 005 006 007 008 009 010 011 012 013 014
9.SA 27 CM.001 CM.002 CM.003 CM.004 CM.005 CM.006 EX.001 EX.002 EX.003 EX.004 EX.005 EX.006 EX.007 EX.008 EX.009 EX.010 EX.011 EX.012 EX.013 EX.014 3.001 3.002 3.003 3.004 3.005 4.001 7.001
9.3 5 001 002 003 004 005
9.4 1 001
9.7 1 001
Chapter 10: Chemical Kinetics
10.CM 13 001 002 003 004 005 006 007 008 009 010 011 012 013
10.EX 23 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023
10.SA 97 CM.001 CM.002 CM.003 CM.004 CM.005 CM.006 CM.007 CM.008 CM.009 CM.010 CM.011 CM.012 CM.013 EX.001 EX.002 EX.003 EX.004 EX.005 EX.006 EX.007 EX.008 EX.009 EX.010 EX.011 EX.012 EX.013 EX.014 EX.015 EX.016 EX.017 EX.018 EX.019 EX.020 EX.021 EX.022 EX.023 1.001 1.002 1.003 1.004 1.005 1.006 1.007 1.008 1.009 1.010 1.011 1.012 2.001 2.002 2.003 2.004 2.005 2.006 2.007 2.008 2.009 3.001 3.002 3.003 3.004 3.005 3.006 3.007 3.008 3.009 3.010 3.011 3.012 4.001 4.002 4.003 4.004 4.005 4.006 4.007 4.008 5.001 5.002 5.003 5.004 5.005 5.006 5.007 5.008 5.009 5.010 5.011 6.001 6.002 6.003 6.004 6.005 6.006 6.007 6.008 6.009
10.1 12 001 002 003 004 005 006 007 008 009 010 011 012
10.2 9 001 002 003 004 005 006 007 008 009
10.3 12 001 002 003 004 005 006 007 008 009 010 011 012
10.4 8 001 002 003 004 005 006 007 008
10.5 11 001 002 003 004 005 006 007 008 009 010 011
10.6 9 001 002 003 004 005 006 007 008 009
Chapter 11: Nuclear Chemistry
11.CM 13 001 002 003 004 005 006 007 008 009 010 011 012 013
11.EX 23 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023
11.SA 61 CM.001 CM.002 CM.003 CM.004 CM.005 CM.006 CM.007 CM.008 CM.009 CM.010 CM.011 CM.012 CM.013 EX.001 EX.002 EX.003 EX.004 EX.005 EX.006 EX.007 EX.008 EX.009 EX.010 EX.011 EX.012 EX.013 EX.014 EX.015 EX.016 EX.017 EX.018 EX.019 EX.020 EX.021 EX.022 EX.023 1.001 1.002 1.003 1.004 1.005 2.001 2.002 2.003 2.004 2.005 2.006 2.007 2.008 2.009 3.001 3.002 4.001 4.002 4.003 5.001 5.002 5.003 5.004 6.001 6.002
11.1 5 001 002 003 004 005
11.2 9 001 002 003 004 005 006 007 008 009
11.3 2 001 002
11.4 3 001 002 003
11.5 4 001 002 003 004
11.6 2 001 002
Total 1224 (2)