| Journal Articles: 31 results |
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Dynamic Reaction Figures: An Integrative Vehicle for Understanding Chemical Reactions Emeric Schultz
Describes the dynamic reaction figure, a flexible learning tool that can be used to balance chemical equations, predict the results of potential reactions, present the underlying mechanism of reactions, and solve quantitative problems in a number of areas.
Schultz, Emeric. J. Chem. Educ. 2008, 85, 386.
Acids / Bases |
Aqueous Solution Chemistry |
Mechanisms of Reactions |
Nonmajor Courses
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Concerning Lewis Acid–Base Theory for Proton Transfer Lawrence J. Sacks
Counterpoint commentary in response to a suggestion that the Lewis acidbase approach be applied to reactions such as ammoniawater and HClwater.
Sacks, Lawrence J. J. Chem. Educ. 2007, 84, 1415.
Acids / Bases |
Lewis Acids / Bases |
Theoretical Chemistry |
Brønsted-Lowry Acids / Bases
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Let Us Give Lewis Acid–Base Theory the Priority It Deserves Alan A. Shaffer
The Lewis concept is simple yet powerful in its scope, and can be used to help beginning students understand reaction mechanisms more fully. However, traditional approaches to acid-base reactions at the introductory level ignores Lewis acid-base theory completely, focusing instead on proton transfer described by the Br?nsted-Lowry concept.
Shaffer, Alan A. J. Chem. Educ. 2006, 83, 1746.
Acids / Bases |
Lewis Acids / Bases |
Lewis Structures |
Mechanisms of Reactions |
Molecular Properties / Structure |
VSEPR Theory |
Covalent Bonding |
Brønsted-Lowry Acids / Bases
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Predicting Inorganic Reaction Products: A Critical Thinking Exercise in General Chemistry David G. DeWit
Describes a course module designed to afford practice in applying the principles encountered throughout the general chemistry sequence to understanding and predicting chemical reactivity and the products of simple inorganic reactions.
DeWit, David G. J. Chem. Educ. 2006, 83, 1625.
Acids / Bases |
Descriptive Chemistry |
Learning Theories |
Metals |
Nonmetals |
Oxidation / Reduction |
Periodicity / Periodic Table |
Reactions
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Two "Gas-in-a-Bag" Reactions To Show the Predictive Power of the Relative AcidBase Strength Chart Brett Criswell
Describes a demonstration in which two different pairs of solid chemicals mixed in two different Ziploc bags in the presence of a small quantities of water react to produce gases. Students are informed that the reactions are BrnstedLowry acidbase type reactions and must determine which member in each pair will act as the acid and which as the base.
Criswell, Brett. J. Chem. Educ. 2006, 83, 1167.
Acids / Bases |
Aqueous Solution Chemistry |
Descriptive Chemistry |
Gases |
Reactions |
Brønsted-Lowry Acids / Bases
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Unified Approximations: A New Approach for Monoprotic Weak Acid–Base Equilibria Harry L. Pardue, Ihab N. Odeh, and Teweldemedhin M. Tesfai
This article describes a new approach to approximate calculations for monoprotic acidbase equilibria in otherwise pure water. The new approach, identified herein as unified approximations, uses a simple decision criterion to select between situations that should be treated as deprotonation and protonation reactions. The remaining treatment takes account of changes in concentrations of conjugate acidbase pairs for all situations and ignores autoprotolysis only for situations for which the analytical concentration of either the conjugate acid or conjugate base will always be larger than zero.
Pardue, Harry L.; Odeh, Ihab N.; Tesfai, Teweldemedhin M. J. Chem. Educ. 2004, 81, 1367.
Acids / Bases |
Equilibrium |
Chemometrics
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The Relative Acidities of Water and Methanol Henry I. Abrash
Analysis of the disparity between the way the acidity constant of water is presented in general chemistry and organic chemistry textbooks.
Abrash, Henry I. J. Chem. Educ. 2001, 78, 1496.
Acids / Bases |
Equilibrium
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Teaching Brønsted-Lowry Acid-Base Theory in a Direct Comprehensive Way Jamie L. Adcock
Unifying all the Bronsted-Lowry acid-base concepts in a quantitative way.
Adcock, Jamie L. J. Chem. Educ. 2001, 78, 1495.
Acids / Bases |
Equilibrium |
Learning Theories |
Water / Water Chemistry |
Brønsted-Lowry Acids / Bases
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Acids and Bases in Layers: The Stratal Structure of an Ancient Topic Wobbe de Vos and Albert Pilot
This article identifies and discusses six successive "layers" that can be recognized in chapters on acids and bases in general chemistry textbooks, each the result of what once was a modernization; the cumulative result of these layers has become problematic, and some learning problems that students have when studying acids and bases become comprehensible when viewed from this perspective.
de Vos, Wobbe; Pilot , Albert. J. Chem. Educ. 2001, 78, 494.
Acids / Bases |
Learning Theories |
Lewis Acids / Bases |
Brønsted-Lowry Acids / Bases
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Two Faces of Alkaloids Jirí Dostál
The article discusses and compares the salts and free bases of six well-known alkaloids: nicotine, morphine, cocaine, sanguinarine, allocryptopine, and magnoflorine. Relevance for the biological and medical uses of these compounds is emphasized.
Dostál, Jirí. J. Chem. Educ. 2000, 77, 993.
Acids / Bases |
Bioorganic Chemistry |
Drugs / Pharmaceuticals |
Natural Products |
Aromatic Compounds |
Medicinal Chemistry
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Weak vs Strong Acids and Bases: The Football Analogy Todd P. Silverstein
A football analogy for acids and bases in which acids are compared to quarterbacks, whose job is to get rid of the ball (H+). A strong acid, like an excellent quarterback, delivers the ball effectively; a weak acid, like a poor quarterback, is often left holding the ball. Furthermore, bases may be likened to wide receivers, whose job is to catch and hold onto the ball (H+).
Silverstein, Todd P. J. Chem. Educ. 2000, 77, 849.
Acids / Bases |
Aqueous Solution Chemistry |
Water / Water Chemistry |
Brønsted-Lowry Acids / Bases
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Do pH in Your Head Addison Ault
Every aqueous solution has a pH. Two factors determine this pH: the acidic or basic strength of the solute, and its concentration. When you use pKa values to express acidic and basic strength you can easily estimate the approximate pH of many aqueous solutions of acids, bases, and their salts and their buffers.
Ault, Addison. J. Chem. Educ. 1999, 76, 936.
Equilibrium |
Acids / Bases |
Aqueous Solution Chemistry |
Learning Theories |
Chemometrics |
Brønsted-Lowry Acids / Bases
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Arrhenius confuses students. Hawkes, Stephen J.
An acid is a substance from which a proton can be removed; protons are not "donated".
Hawkes, Stephen J. J. Chem. Educ. 1992, 69, 542.
Acids / Bases
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The computer as student: An application of artificial intelligence Birk, James P.
The author describes how the development of computer software to teach about chemical reactivity also provides information about how we should teach several topics in general chemistry.
Birk, James P. J. Chem. Educ. 1992, 69, 294.
Oxidation / Reduction |
Acids / Bases
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Acid and base dissociation constants of water and its associated ions de Lange, A. M.; Potgieter, J. H.
By applying the Bronsted-Lowry concept of acids and bases, one can derive acid and base dissociation constants for water and its associated ions.
de Lange, A. M.; Potgieter, J. H. J. Chem. Educ. 1991, 68, 304.
Acids / Bases |
Equilibrium |
pH |
Brønsted-Lowry Acids / Bases
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What chemistry do our students need to learn? Hawkes, Stephen J.
Suggested topics of importance to chemistry nonmajors.
Hawkes, Stephen J. J. Chem. Educ. 1989, 66, 831.
Nonmajor Courses |
Oxidation / Reduction |
Geochemistry |
Atmospheric Chemistry |
Brønsted-Lowry Acids / Bases
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Why teach solution equilibrium? Butler, James N.
What are the most important aspects of solution equilibrium to teach at the elementary level?
Butler, James N. J. Chem. Educ. 1984, 61, 784.
Equilibrium |
Solutions / Solvents |
Acids / Bases |
pH
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An analogy for the leveling effect Macomber, Roger S.
Analogy to help students understand the leveling effect of certain solvents.
Macomber, Roger S. J. Chem. Educ. 1984, 61, 128.
Acids / Bases |
Aqueous Solution Chemistry |
Solutions / Solvents |
Brønsted-Lowry Acids / Bases
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A physical model to demonstrate acid-base conjugate pairs Naylor, Robert W.
There seems to be a great deal of confusion among students over the relationship of the strength of a conjugate acid or base to its respective precursor. Using magnets, an extremely simple method of demonstrating that weak acids give strong bases and vice versa can be easily performed.
Naylor, Robert W. J. Chem. Educ. 1981, 58, 1017.
Acids / Bases
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Red cabbage and the electrolysis of water Skinner, James F.
The demonstration profiled here has proven effective in bringing together concepts from acid-base chemistry and electrochemistry.
Skinner, James F. J. Chem. Educ. 1981, 58, 1017.
Electrochemistry |
Water / Water Chemistry |
Acids / Bases
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Red cabbage and the electrolysis of water Skinner, James F.
The demonstration profiled here has proven effective in bringing together concepts from acid-base chemistry and electrochemistry.
Skinner, James F. J. Chem. Educ. 1981, 58, 1017.
Electrochemistry |
Water / Water Chemistry |
Acids / Bases
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The "chemical fountain": An old experiment in a new setting Ben-Zvi, Ruth; Silberstein, Judith
A new teaching sequence was developed for an introductory high school chemistry course. In this teaching sequence experiments are designed so as to capture student interest, enhance their motivation, and get them involved in the learning process.
Ben-Zvi, Ruth; Silberstein, Judith J. Chem. Educ. 1981, 58, 68.
Amines / Ammonium Compounds |
Acids / Bases
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Acid-base half-reactions - A useful formalism for review lessons Atkinson, G. F.
An effective way to draw analogies between acid-base and redox effects while reviewing both.
Atkinson, G. F. J. Chem. Educ. 1979, 56, 238.
Oxidation / Reduction |
Reactions |
Acids / Bases |
Enrichment / Review Materials
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Demonstrations for high school chemistry Castka, Joseph F.
A sequence of demonstrations that may serve to initiate and maintain student interest in the development of acid-base theories and bond strength.
Castka, Joseph F. J. Chem. Educ. 1975, 52, 394.
Acids / Bases |
Covalent Bonding |
Lewis Acids / Bases |
Brønsted-Lowry Acids / Bases
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A new chemistry program for nursing and allied health students Stanitski, Conrad L.; Sears, Curtis T., Jr.
Outlines and discusses the topics considered in a chemistry program for nursing and allied health students.
Stanitski, Conrad L.; Sears, Curtis T., Jr. J. Chem. Educ. 1975, 52, 226.
Nonmajor Courses |
Applications of Chemistry |
Medicinal Chemistry |
Oxidation / Reduction |
Catalysis |
Acids / Bases |
pH |
Metabolism |
Drugs / Pharmaceuticals
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Conjugate acid-base and redox theory Pacer, Richard A.
Consideration of relative oxidizing / reducing strength would be greatly facilitated if this topic were presented in terms of transfer of one or more electrons between members of a conjugate redox pair.
Pacer, Richard A. J. Chem. Educ. 1973, 50, 178.
Acids / Bases |
Oxidation / Reduction
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Understanding a culprit before eliminating it. An application of Lewis acid-base principles to atmospheric SO2 as a pollutant Brasted, Robert C.
The SO2 molecule offers ample opportunities for teaching practical chemistry. [Debut of first run. This feature reappeared in 1986.]
Brasted, Robert C. J. Chem. Educ. 1970, 47, 447.
Acids / Bases |
Lewis Acids / Bases |
Atmospheric Chemistry |
Mechanisms of Reactions |
Reactions |
Applications of Chemistry |
Lewis Structures |
Molecular Properties / Structure
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Letter to the editor Onwood, D. P.
Discusses variations in the usage of the terms "acid" and "base," including Lowry-Bronsted and Lewis systems.
Onwood, D. P. J. Chem. Educ. 1966, 43, 335.
Acids / Bases |
Lewis Acids / Bases |
Nomenclature / Units / Symbols
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Homogeneous catalysis: A reexamination of definitions Leisten, J. A.
Considers common questions regarding the action of catalysts by examining various typical examples.
Leisten, J. A. J. Chem. Educ. 1964, 41, 23.
Catalysis |
Reactions |
Acids / Bases
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A general equation for approximate hydronium ion calculations Drenan, James W.
Presents a general equation for simplifying calculations of the hydronium ion.
Drenan, James W. J. Chem. Educ. 1955, 32, 36.
Acids / Bases |
Aqueous Solution Chemistry |
pH |
Chemometrics
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Models illustrating the Lewis theory of acids and bases Herron, Fred Y.
The purpose of this article is to describe a method of presenting the Lewis theory of acids and bases by means of cardboard models.
Herron, Fred Y. J. Chem. Educ. 1953, 30, 199.
Acids / Bases |
Lewis Acids / Bases |
Molecular Modeling
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