Basic Chemistry 2nd edition

Textbook Cover

Karen C. Timberlake and William Timberlake
Publisher: Pearson Education


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  • Chapter 1: Chemistry in our Lives
    • 1.1: Chemistry and Chemicals
    • 1.2: Scientific Method: Thinking like a Scientist (2)
    • 1.3: A Study Plan for Learning Chemistry
    • 1: Understanding the Concepts (1)
    • 1: Additional Questions and Problems
    • 1: Challenge Questions (1)

  • Chapter 2: Measurement
    • 2.1: Units of Measurement (1)
    • 2.2: Scientific Notation (3)
    • 2.3: Measured Numbers and Significant Figures (5)
    • 2.4: Significant Figures in Calculations (3)
    • 2.5: Prefixes and Equalities (1)
    • 2.6: Writing Conversion Factors
    • 2.7: Problem Solving (2)
    • 2.8: Density (3)
    • 2: Understanding the Concepts
    • 2: Additional Questions and Problems (4)
    • 2: Challenge Questions

  • Chapter 3: Matter and Energy
    • 3.1: Classification of Matter (3)
    • 3.2: Properties of Matter
    • 3.3: Temperature (2)
    • 3.4: Energy (2)
    • 3.5: Specific Heat (5)
    • 3: Understanding the Concepts
    • 3: Additional Questions and Problems (2)
    • 3: Challenge Questions (1)

  • Chapter 4: Atoms and Elements
    • 4.1: Elements and Symbols (2)
    • 4.2: The Periodic Table (4)
    • 4.3: The Atom (2)
    • 4.4: Atomic Number and Mass Number (1)
    • 4.5: Isotopes and Atomic Mass (5)
    • 4.6: Electron Energy Levels
    • 4: Understanding the Concepts
    • 4: Additional Questions and Problems
    • 4: Challenge Questions

  • Chapter 5: Names and Formulas of Compounds
    • 5.1: Octet Rule and Ions (3)
    • 5.2: Ionic Compounds (3)
    • 5.3: Naming and Writing Ionic Formulas (4)
    • 5.4: Polyatomic Ions (3)
    • 5.5: Covalent Compounds and Their Names (3)
    • 5: Understanding the Concepts
    • 5: Additional Questions and Problems (2)
    • 5: Challenge Questions

  • Chapter 6: Chemical Quantities
    • 6.1: Atomic Mass and Formula Mass (3)
    • 6.2: The Mole (3)
    • 6.3: Molar Mass (3)
    • 6.4: Calculations Using Molar Mass (6)
    • 6.5: Percent Composition and Empirical Formulas (4)
    • 6.6: Molecular Formulas (4)
    • 6: Understanding the Concepts
    • 6: Additional Questions and Problems
    • 6: Challenge Questions

  • Chapter 7: Chemical Reactions
    • 7.1: Chemical Reactions (1)
    • 7.2: Chemical Equations (1)
    • 7.3: Balancing a Chemical Equation (2)
    • 7.4: Types of Reactions (2)
    • 7.5: Energy in Chemical Reactions (1)
    • 7: Understanding the Concepts
    • 7: Additional Questions and Problems (1)
    • 7: Challenge Questions

  • Chapter 8: Chemical Quantities in Reactions
    • 8.1: Mole Relationships in Chemical Equations (2)
    • 8.2: Mass Calculations for Reactions (3)
    • 8.3: Limiting Reactants (2)
    • 8.4: Percent Yield (1)
    • 8: Understanding the Concepts
    • 8: Additional Questions and Problems (1)
    • 8: Challenge Questions

  • Chapter 9: Electronic Structure and Periodic Trends
    • 9.1: Electromagnetic Radiation (3)
    • 9.2: Atomic Spectra and Energy Levels (1)
    • 9.3: Energy Levels, Sublevels, and Orbitals (1)
    • 9.4: Writing Orbital Diagrams and Electron Configurations (4)
    • 9.5: Electron Configurations and the Periodic Table (5)
    • 9.6: Periodic Trends of the Elements (5)
    • 9: Understanding the Concepts
    • 9: Additional Questions and Problems
    • 9: Challenge Questions

  • Chapter 10: Molecular Structure: Solids and Liquids
    • 10.1: Electron Configuration of Ionic Compounds
    • 10.2: Electron-Dot Formulas (1)
    • 10.3: Shapes of Molecules and Ions (VSEPR Theory) (2)
    • 10.4: Electronegativity and Polarity (3)
    • 10.5: Attractive Forces in Compounds (1)
    • 10.6: Matter and Changes of State (3)
    • 10: Understanding the Concepts
    • 10: Additional Questions and Problems (1)
    • 10: Challenge Questions

  • Chapter 11: Gases
    • 11.1: Properties of Gases
    • 11.2: Gas Pressure (1)
    • 11.3: Pressure and Volume (Boyle's Law) (1)
    • 11.4: Temperature and Volume (Charles' Law)
    • 11.5: Temperature and Pressure (Gay-Lussac's Law) (1)
    • 11.6: The Combined Gas Law (2)
    • 11.7: Volume and Moles (Avogadro's Law) (1)
    • 11.8: The Ideal Gas Law (3)
    • 11.9: Gas Laws and Chemical Reactions (2)
    • 11.10: Partial Pressures (Dalton's Law) (1)
    • 11: Understanding the Concepts
    • 11: Additional Questions and Problems (3)
    • 11: Challenge Questions

  • Chapter 12: Solutions
    • 12.1: Solutions (2)
    • 12.2: Electrolytes and Nonelectrolytes (2)
    • 12.3: Solubility (4)
    • 12.4: Percent Concentration (3)
    • 12.5: Molarity and Dilutions (5)
    • 12.6: Solutions in Chemical Reactions (2)
    • 12: Understanding the Concepts
    • 12: Additional Questions and Problems
    • 12: Challenge Questions

  • Chapter 13: Chemical Equilibrium
    • 13.1: Rates of Reactions (1)
    • 13.2: Chemical Equilibrium
    • 13.3: Equilibrium Constants (4)
    • 13.4: Using Equilibrium Constants (2)
    • 13.5: Changing Equilibrium Conditions: Le Châtelier's Principle (2)
    • 13.6: Equilibrium in Saturated Solutions (4)
    • 13: Understanding the Concepts
    • 13: Additional Questions and Problems (2)
    • 13: Challenge Questions

  • Chapter 14: Acids and Bases
    • 14.1: Acids and Bases (2)
    • 14.2: Brønsted-Lowry Acids and Bases (3)
    • 14.3: Strengths of Acids and Bases (2)
    • 14.4: Dissociation Constants
    • 14.5: Ionization of Water (3)
    • 14.6: The pH Scale (2)
    • 14.7: Reactions of Acids and Bases (1)
    • 14.8: Acid-Base Titration (2)
    • 14.9: Acid-Base Properties of Salt Solutions
    • 14.10: Buffers
    • 14: Understanding the Concepts
    • 14: Additional Questions and Problems
    • 14: Challenge Questions

  • Chapter 15: Oxidation-Reduction: Transfer of Electrons
    • 15.1: Oxidation and Reduction (3)
    • 15.2: Oxidation Numbers (3)
    • 15.3: Balancing Oxidation-Reduction Equations (2)
    • 15.4: Electrical Energy from Oxidation-Reduction Reactions (3)
    • 15.5: Oxidation-Reduction Reactions That Require Electrical Energy
    • 15: Understanding the Concepts
    • 15: Additional Questions and Problems (4)
    • 15: Challenge Questions

  • Chapter 16: Nuclear Radiation
    • 16.1: Natural Radioactivity (1)
    • 16.2: Nuclear Equations (4)
    • 16.3: Radiation Measurement (1)
    • 16.4: Half-Life of a Radioisotope (2)
    • 16.5: Medical Applications Using Radioactivity (1)
    • 16.6: Nuclear Fission and Fusion (1)
    • 16: Understanding the Concepts
    • 16: Additional Questions and Problems (4)
    • 16: Challenge Questions (1)

  • Chapter 17: Organic Chemistry
    • 17.1: Organic Compounds (1)
    • 17.2: Alkanes (3)
    • 17.3: Functional Groups (2)
    • 17.4: Alkenes and Alkynes (2)
    • 17.5: Polymers
    • 17.6: Aromatic Compounds (1)
    • 17.7: Alcohols and Ethers (2)
    • 17.8: Aldehydes and Ketones
    • 17.9: Carboxylic Acids and Esters
    • 17.10: Amines and Amides (1)
    • 17: Understanding the Concepts
    • 17: Additional Questions and Problems
    • 17: Challenge Questions

  • Chapter 18: Biochemistry
    • 18.1: Carbohydrates (1)
    • 18.2: Disaccharides and Polysaccharides (2)
    • 18.3: Lipids (1)
    • 18.4: Proteins (2)
    • 18.5: Protein Structure (1)
    • 18.6: Proteins as Enzymes
    • 18.7: Nucleic Acids (1)
    • 18.8: Protein Synthesis (1)
    • 18: Understanding the Concepts
    • 18: Additional Questions and Problems
    • 18: Challenge Questions

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
P - Problems


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


Group Quantity Questions
Chapter 1: Chemistry in our Lives
1.P 4 012 014 022 030
Chapter 2: Measurement
2.P 22 002 008 010 012 014 020 022 024 026 030 032 034 044 062 068 070 072 074 086 090 098 104
Chapter 3: Matter and Energy
3.P 15 002 004 006 016 018 022 028 032 034 036 040 042 052 054 072
Chapter 4: Atoms and Elements
4.P 14 002 006 008 010 012 014 016 020 030 032 036 040 042 044
Chapter 5: Names and Formulas of Compounds
5.P 18 004 008 010 012 016 018 024 030 034 036 042 046 048 054 058 060 082 094
Chapter 6: Chemical Quantities
6.P 23 004 006 008 014 015 016 018 019 020 022 024 026 028 030 032 034 036 038 042 044 046 048 050
Chapter 7: Chemical Reactions
7.P 8 002 006 012 014 022 024 032 050
Chapter 8: Chemical Quantities in Reactions
8.P 9 008 010 012 014 018 022 026 030 044
Chapter 9: Electronic Structure and Periodic Trends
9.P 19 006 008 012 020 028 034 036 038 040 042 044 046 048 050 058 062 064 070 072
Chapter 10: Molecular Structure: Solids and Liquids
10.P 11 006 018 022 032 034 036 042 048 052 054 091
Chapter 11: Gases
11.P 15 008 020 032 040 042 046 052 056 058 060 062 066 082 090 100
Chapter 12: Solutions
12.P 18 002 004 010 012 018 020 022 024 030 032 034 038 040 042 046 048 052 054
Chapter 13: Chemical Equilibrium
13.P 15 006 012 016 018 020 022 024 030 032 036 038 040 042 056 070
Chapter 14: Acids and Bases
14.P 15 002 004 008 010 012 020 024 036 038 040 048 050 056 060 062
Chapter 15: Oxidation-Reduction: Transfer of Electrons
15.P 15 002 004 008 012 014 020 022 024 028 032 034 054 068 070 072
Chapter 16: Nuclear Radiation
16.P 15 010 014 016 020 022 026 032 034 038 042 056 060 062 066 080
Chapter 17: Organic Chemistry
17.P 12 002 014 016 022 024 026 028 030 040 044 050 076
Chapter 18: Biochemistry
18.P 9 006 016 018 020 034 036 046 056 064
Total 257