Introductory Chemistry 2nd edition


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  • Chapter 1: The Chemical World
    • 1: Questions (6)
    • 1: Problems (3)

  • Chapter 2: Measurement and Problem Solving
    • 2: Questions
    • 2: Scientific Notation (4)
    • 2: Significant Figures (2)
    • 2: Rounding (3)
    • 2: Significant Figures in Calculations (5)
    • 2: Unit Conversion (8)
    • 2: Units Raised to a Power (3)
    • 2: Density (3)
    • 2: Cumulative Problems (4)
    • 2: Highlight Problems

  • 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: Converting between Temperature Scales (2)
    • 3: Energy, Heat Capacity, and Temperature Changes (6)
    • 3: Cumulative Review (7)
    • 3: Highlight Problems

  • Chapter 4: Atoms and Elements
    • 4: Questions
    • 4: Atomic and Nuclear Theory
    • 4: Protons, Neutrons, and Electrons (4)
    • 4: Elements, Symbols, and Names (4)
    • 4: The Periodic Table (9)
    • 4: Ions (5)
    • 4: Isotopes (4)
    • 4: Atomic Mass (3)
    • 4: Cumulative Problems
    • 4: Highlight Problems

  • Chapter 5: Molecules and Compounds
    • 5: Questions
    • 5: Constant Composition of Compounds (1)
    • 5: Chemical Formulas (2)
    • 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 (2)
    • 5: Highlight Problems

  • Chapter 6: Chemical Composition
    • 6: Questions
    • 6: The Mole Concept (12)
    • 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 (4)
    • 6: Highlight Problems

  • Chapter 7: Chemical Reactions
    • 7: Questions
    • 7: Evidence of Chemical Reaction (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 (4)
    • 7: Highlight Problems

  • Chapter 8: Quantities in Chemical Reactions
    • 8: Questions
    • 8: Mole-to-Mole Conversions (6)
    • 8: Mass-to-Mass Conversions (5)
    • 8: Limiting Reactant, Theoretical Yield, and Percent Yield (9)
    • 8: Cumulative Problems (5)
    • 8: Highlight Problems (2)

  • Chapter 9: Electrons in Atoms and the Periodic Table
    • 9: Questions
    • 9: Wavelength, Energy, and Frequency of Electromagnetic Radiation (3)
    • 9: The Bohr Model
    • 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 (3)
    • 9: Highlight Problems

  • Chapter 10: Chemical Bonding
    • 10: Questions
    • 10: Writing Lewis Structures for Elements (4)
    • 10: Lewis Structures for Ionic Compounds (5)
    • 10: Lewis Structures for Covalent Compounds
    • 10: Predicting the Shapes of Molecules (8)
    • 10: Electronegativity and Polarity (7)
    • 10: Cumulative Problems (1)
    • 10: Highlight Problems

  • Chapter 11: Gases
    • 11: Questions
    • 11: Converting between Pressure Units (2)
    • 11: Simple Gas Laws (4)
    • 11: The Combined Gas Law (2)
    • 11: The Ideal Gas Law (5)
    • 11: Partial Pressure (3)
    • 11: Molar Volume (3)
    • 11: Gases in Chemical Reactions (6)
    • 11: Highlight Problems

  • Chapter 12: Liquids, Solids, and Intermolecular Forces
    • 12: Questions
    • 12: Evaporation, condensation, Melting, and Freezing
    • 12: Heat of Vaporization and Heat of Fusion (6)
    • 12: Intermolecular Forces (3)
    • 12: Types of Solids (5)
    • 12: Cumulative Problems (4)
    • 12: Highlight Problems

  • 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 (6)
    • 13: Solution Dilution (2)
    • 13: Solution Stoichiometry (4)
    • 13: Molality, Freezing Point Depression, and Boiling Point Elevation (3)
    • 13: Cumulative Problems (2)
    • 13: Highlight Problems

  • Chapter 14: Acids and Bases
    • 14: Questions
    • 14: Acid and Base Definitions (5)
    • 14: Acid-Base Reactions (1)
    • 14: Acid-Base Titrations (2)
    • 14: Strong and Weak Acids and Bases (2)
    • 14: Acidity, Basicity, and Kw (8)
    • 14: Buffers and Acid Rain
    • 14: Cumulative Questions (1)
    • 14: Highlight Problems

  • Chapter 15: Chemical Equilibrium
    • 15: Questions
    • 15: The Rate of Reaction
    • 15: Equilibrium Constant (2)
    • 15: Calculating and Using Equilibrium Constants (3)
    • 15: Le Chatelier's Principle (5)
    • 15: The Solubility-Product Constant (2)
    • 15: Cumulative Problems
    • 15: Highlight Problems

  • 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
    • 16: Corrosion
    • 16: Cumulative Problems
    • 16: Highlight Problems

  • Chapter 17: Radioactivity and Nuclear Chemistry
    • 17: Questions
    • 17: Isotopic and Nuclear Particle Symbols (4)
    • 17: Radioactive Decay (5)
    • 17: Half-Life (4)
    • 17: Radiocarbon Dating (4)
    • 17: Cumulative Problems (3)
    • 17: Highlight Problems (3)

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

  • Chapter 19: Biochemistry
    • 19: Questions
    • 19: Carbohydrates
    • 19: Amino Acids and Proteins
    • 19: Nucleic Acids
    • 19: Cumulative Problems
    • 19: Highlight Problems

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 - Problem


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


Group Quantity Questions
Chapter 1: The Chemical World
1.P 9 002 004 006 008 010 012 016 018 020
Chapter 2: Measurement and Problem Solving
2.P 32 028 030 032 034 038 042 046 048 050 052 054 056 058 060 064 066 068 070 074 076 078 080 082 084 086 090 092 096 098 100 106 108
Chapter 3: Matter and Energy
3.P 26 028 030 034 038 042 044 046 048 050 054 056 058 062 066 068 070 072 074 078 082 084 086 088 090 094 096
Chapter 4: Atoms and Elements
4.P 29 034 036 038 040 042 044 046 048 052 054 056 058 060 062 064 066 068 072 074 076 080 082 086 088 090 092 096 098 100
Chapter 5: Molecules and Compounds
5.P 25 024 030 036 038 040 042 044 046 048 050 054 056 058 060 062 064 066 068 070 072 074 076 078 082 092
Chapter 6: Chemical Composition
6.P 29 018 020 026 028 030 036 038 040 042 046 052 054 056 060 064 066 068 070 072 076 078 086 088 090 094 100 106 108 114
Chapter 7: Chemical Reactions
7.P 25 030 032 036 038 046 050 052 054 056 060 064 066 068 072 074 082 084 086 088 090 092 096 098 100 102
Chapter 8: Quantities in Chemical Reactions
8.P 27 016 018 020 022 026 028 030 032 034 036 040 042 044 046 048 052 054 056 058 060 064 066 068 070 072 083 084
Chapter 9: Electrons in Atoms and the Periodic Table
9.P 26 032 034 036 046 050 052 054 056 058 060 062 064 066 068 070 074 076 078 080 082 084 086 088 090 094 102
Chapter 10: Chemical Bonding
10.P 25 026 028 034 036 038 040 042 044 046 062 064 066 068 070 072 074 076 078 080 082 084 086 090 092 094
Chapter 11: Gases
11.P 25 028 034 038 046 050 052 058 060 064 066 072 074 076 078 080 084 088 090 092 096 098 102 110 112 116
Chapter 12: Liquids, Solids, and Intermolecular Forces
12.P 18 050 052 054 056 058 060 062 064 066 076 078 080 082 084 086 088 090 092
Chapter 13: Solutions
13.P 26 026 034 044 046 050 052 054 056 060 062 064 066 068 070 074 080 084 088 090 092 094 096 100 104 114 116
Chapter 14: Acids and Bases
14.P 19 034 036 038 040 042 046 052 054 058 062 066 070 072 074 076 078 080 082 104
Chapter 15: Chemical Equilibrium
15.P 12 046 052 056 060 062 066 068 074 076 078 084 090
Chapter 16: Oxidation and Reduction
16.P 8 036 038 048 050 052 054 066 068
Chapter 17: Radioactivity and Nuclear Chemistry
17.P 23 056 058 060 062 064 066 068 070 072 074 076 078 080 084 086 088 090 092 094 098 101 102 103
Chapter 18: Organic Chemistry
18.P 21 036 038 040 042 046 048 050 058 060 062 080 082 084 086 087 088 090 092 098 106 108
Chapter 19: Biochemistry
19 0  
Total 405