Table of Contents

September 2007
Volume 84, Issue 9
Pages 1399-1551
About the Cover:

In the laboratory article, "An Improved Method for Studying the Enzyme-Catalyzed Oxidation of Glucose Using Luminescent Probes", Bare, Pham, Cuber, and Demas describe an improved method for studying the enzyme-catalyzed oxidation of glucose using luminescent probes. This month's cover shows a three-dimensional structure of glucose oxidase from Aspergillus niger (PDB ID 1CF3; H. J. Hect and H. Kalisz) as visualized by MacPyMOL (W. L. Delano). The flavin adenine dinucleotide cofactor is yellow, and a cartoon representation of the secondary structure is blue at the amino-terminus and green at the carboxy-terminus of the protein. The molecular surface is rendered in transparent violet.

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Chemical Education Today

Learning from Others

John W. Moore
p 1399
Publication Date (Web): September 1, 2007 (Editorial)
DOI: 10.1021/ed084p1399
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A New School Year Begins

Laura E. Slocum
p 1401
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1401

Research Advances: New Antifreeze Protein Gives Cold Shoulder to Its Natural Counterpart; Lab-Made "Microtornadoes" May Reveal Destructive Secrets of Real-Life Twisters

Angela G. King
p 1402
Publication Date (Web): September 1, 2007 (Report)
DOI: 10.1021/ed084p1402

Marbling Paper Postcards

Patti Duncan
p 1407
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1407

An Interview with Eleanor Siegrist, 2007 Award Winner

JCE staff
p 1408
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1408

ConfChem: International Conference on First-Year College Chemistry

James F. Kirby , Paul B. Kelter , Robert E. Belford
p 1413
Publication Date (Web): September 1, 2007 (Report)
DOI: 10.1021/ed084p1413

Concerning Lewis Acid–Base Theory for Proton Transfer

Lawrence J. Sacks
p 1415
Publication Date (Web): September 1, 2007 (Commentary)
DOI: 10.1021/ed084p1415
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The Origin of the Oxidation-State Concept

William B. Jensen
p 1418
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1418

Lactic Acid

Jay A. Young
p 1420
Publication Date (Web): September 1, 2007 (Communication)
DOI: 10.1021/ed084p1420

Urea

Jay A. Young
p 1421
Publication Date (Web): September 1, 2007 (Communication)
DOI: 10.1021/ed084p1421

News and Announcements

JCE staff
p 1422
Publication Date (Web): September 1, 2007 (News and Announcements)
DOI: 10.1021/ed084p1422
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Exception to the Le Châtelier Principle

Thomas R. Herrinton
p 1427
Publication Date (Web): September 1, 2007 (Letter)
DOI: 10.1021/ed084p1427.1
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Exception to the Le Châtelier Principle

David S. Corti and Mark J. Uline
p 1427
Publication Date (Web): September 1, 2007 (Letter)
DOI: 10.1021/ed084p1427.2
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Equilibrium: A Teaching/Learning Activity

Douglas A. Vander Griend
p 1428
Publication Date (Web): September 1, 2007 (Letter)
DOI: 10.1021/ed084p1428
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Equilibrium: A Teaching/Learning Activity

Audrey Wilson
p 1429
Publication Date (Web): September 1, 2007 (Letter)
DOI: 10.1021/ed084p1429.1
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Quantitative Aspects of Teaching

Sidney Toby
p 1429
Publication Date (Web): September 1, 2007 (Letter)
DOI: 10.1021/ed084p1429.2
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Liquid Crystals Activity Revisited

Vladimir M. Petruševski
p 1429
Publication Date (Web): September 1, 2007 (Letter)
DOI: 10.1021/ed084p1429.3
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Determination of the Number of Operations for a Point Group from Only Its Name

Owen J. Curnow
p 1430
Publication Date (Web): September 1, 2007 (Letter)
DOI: 10.1021/ed084p1430
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New Ideas in Chemistry from Fresh Energy for the Periodic Law (Henry A. Bent)

A. Truman Schwartz
p 1431
Publication Date (Web): September 1, 2007 (Book and Media Review)
DOI: 10.1021/ed084p1431
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Biological Inorganic Chemistry (Ivano Bertini, Harry B. Gray, Edward I. Stiefel, and Joan S. Valentine, eds.)

Daniel Rabinovich
p 1432
Publication Date (Web): September 1, 2007 (Book and Media Review)
DOI: 10.1021/ed084p1432
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Chemistry for Everyone

Chemie im Kontext: Situating Learning in Relevant Contexts while Systematically Developing Basic Chemical Concepts

Peter M. Nentwig and Reinhard Demuth , Ilka Parchmann , Bernd Ralle , Cornelia Gräsel
p 1439
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1439

In the Classroom

Reworking Exams To Teach Chemistry Content and Reinforce Student Learning

John M. Risley
p 1445
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1445

Predicted versus Actual Performance in Undergraduate Organic Chemistry and Implications for Student Advising

David P. Pursell
p 1448
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1448

In the Laboratory

A One-Hour Practical Lab Exam for Organic Chemistry

Edward G. Neeland
p 1453
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1453

The Penny Experiment Revisited: An Illustration of Significant Figures, Accuracy, Precision, and Data Analysis

Joseph Bularzik
p 1456
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1456

Which Method Is Most Precise; Which Is Most Accurate?

A. D. Jordan
p 1459
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1459

Redox Titration of Ferricyanide to Ferrocyanide with Ascorbic Acid: Illustrating the Nernst Equation and Beer–Lambert Law

Tina H. Huang , Gail Salter , Sarah L. Kahn and Yvonne M. Gindt
p 1461
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1461

Electrochemistry of (Dihapto-Buckminster-Fullerene) Pentacarbonyl Tungsten(0)

Elvin Igartúa-Nieves , Yessenia Ocasio-Delgado , José Rivera-Pagán and José E. Cortés-Figueroa
p 1464
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1464

Spectroelectrochemical Sensing of Aqueous Iron

Tanya Shtoyko , Dean Stuart and H. Neil Gray
p 1467
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1467
History, Education, and Documentation

Detection of Catechol by Potentiometric-Flow Injection Analysis in the Presence of Interferents

Justyna Widera , Suzanne K. Lunsford , Hong Zhang
p 1471
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1471

A Guided-Inquiry Approach to the Sodium Borohydride Reduction and Grignard Reaction of Carbonyl Compounds

Robert E. Rosenberg
p 1474
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1474
History, Education, and Documentation

A Knoevenagel Initiated Annulation Reaction Using Room Temperature or Microwave Conditions

A. Gilbert Cook
p 1477
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1477
History, Education, and Documentation

Synthesis of Anomeric Methyl Fructofuranosides and Their Separation on an Ion-exchange Resin

Erkki Nurminen , Päivi Poijärvi , Katja Koskua and Jari Hovinen
p 1480
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1480
History, Education, and Documentation

Determining the Quantum Efficiency for Activation of an Organometallic Photoinitiator for Cationic Polymerization

Alistair J. Lees and Vladimir Jakubek , David M. Hayes , Maura Mahar , R. Chris Schnabel and Paras Shah
p 1483
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1483

Coupling Molecular Modeling to the Traditional "IR-ID" Exercise in the Introductory Organic Chemistry Laboratory

Heather Stokes-Huby and Dale E. Vitale
p 1486
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1486
History, Education, and Documentation

Teaching Chromatography Using Virtual Laboratory Exercises

David C. Stone
p 1488
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1488
History, Education, and Documentation

Molecular Models of Rosmarinic Acid and DPPH

William F. Coleman
p 1496
Publication Date (Web): September 1, 2007 (Tech Report)
DOI: 10.1021/ed084p1496
History, Education, and Documentation
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Revisiting the Separation of Ferrocene and Acetylferrocene by Adsorption Chromatography: Adding a Third Component

Rebecca Hwa and Haim Weizman
p 1497
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1497
History, Education, and Documentation

Determination of the Rotational Barrier for Kinetically Stable Conformational Isomers via NMR and 2D TLC

Gregory T. Rushton , William G. Burns , Judi M. Lavin , Yong S. Chong , Perry Pellechia and Ken D. Shimizu
p 1499
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1499
History, Education, and Documentation

Quantitative HPLC Analysis of Rosmarinic Acid in Extracts of Melissa officinalis and Spectrophotometric Measurement of Their Antioxidant Activities

Vera Canelas and Cristina Teixeira da Costa
p 1502
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1502
History, Education, and Documentation

Quantitative Determination of Photosynthetic Pigments in Green Beans Using Thin-Layer Chromatography and a Flatbed Scanner as Densitometer

Juan Valverde and Hervé This , Marc Vignolle
p 1505
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1505
History, Education, and Documentation

Determination of the Subunit Molecular Mass and Composition of Alcohol Dehydrogenase by SDS-PAGE

Barbara T. Nash
p 1508
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1508
History, Education, and Documentation

An Improved Method for Studying the Enzyme-Catalyzed Oxidation of Glucose Using Luminescent Probes

Matthew Cuber and J. N. Demas , William D. Bare and Chi V. Pham
p 1511
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1511

Research: Science and Education

Appreciating Formal Similarities in the Kinetics of Homogeneous, Heterogeneous, and Enzyme Catalysis

Michael T. Ashby
p 1515
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1515
History, Education, and Documentation

Lactate Dehydrogenase Catalysis: Roles of Keto, Hydrated, and Enol Pyruvate

J. E. Meany
p 1520
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1520
History, Education, and Documentation

CHEMX: An Instrument To Assess Students' Cognitive Expectations for Learning Chemistry

Nathaniel Grove and Stacey Lowery Bretz
p 1524
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1524
History, Education, and Documentation

Pre-Service Teacher as Researcher: The Value of Inquiry in Learning Science

Janice M. Hohloch , Nathaniel Grove and Stacey Lowery Bretz
p 1530
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1530
History, Education, and Documentation

The Aromaticity of Pericyclic Reaction Transition States

Henry S. Rzepa
p 1535
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1535
History, Education, and Documentation

The A1c Blood Test: An Illustration of Principles from General and Organic Chemistry

Robert C. Kerber
p 1541
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1541

Information • Textbooks • Media • Resources

Structures for the ABO(H) Blood Group: Which Textbook Is Correct?

John M. Risley
p 1546
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1546

Configurational Entropy Revisited

Frank L. Lambert
p 1548
Publication Date (Web): September 1, 2007 (Article)
DOI: 10.1021/ed084p1548

An Interactive Computer Program To Help Students Learn Molecular Symmetry Elements and Operations

David E. Meyer and Andrew L. Sargent
p 1551
Publication Date (Web): September 1, 2007 (Tech Report)
DOI: 10.1021/ed084p1551
History, Education, and Documentation
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