| Journal Articles: 27 results |
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The Use of Limits in an Advanced Placement Chemistry Course Paul S. Matsumoto, Jonathan Ring, and Jia Li (Lily) Zhu
This article describes the use of limits in topics usually covered in advanced placement or first-year college chemistry. This approach supplements the interpretation of the graph of an equation since it is usually easier to evaluate the limit of a function than to generate its graph.
Matsumoto, Paul S.; Ring, Jonathan; Zhu, Jia Li (Lily). J. Chem. Educ. 2007, 84, 1655.
Acids / Bases |
Equilibrium |
Gases |
Mathematics / Symbolic Mathematics |
Thermodynamics
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Discovering the Thermodynamics of Simultaneous Equilibria. An Entropy Analysis Activity Involving Consecutive Equilibria Thomas H. Bindel
This activity explores the thermodynamics of simultaneous, consecutive equilibria and is appropriate for second-year high school or AP chemistry. Students discover that a reactant-favored (entropy-diminishing) reaction can be caused to happen if it is coupled with a product-favored reaction of sufficient entropy production.
Bindel, Thomas H. J. Chem. Educ. 2007, 84, 449.
Acids / Bases |
Equilibrium |
Thermodynamics
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Microscopic Description of Le Châtelier's Principle Igor Novak
The analysis based on microscopic descriptors (energy levels and their populations) is given that provides visualization of free energies and conceptual rationalization of Le Châtelier's principle. The misconception "nature favors equilibrium" is highlighted.
Novak, Igor. J. Chem. Educ. 2005, 82, 1190.
Equilibrium |
Thermodynamics
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Let's Drive "Driving Force" Out of Chemistry Norman C. Craig
"Driving force" is identified as a misleading concept in analyzing spontaneous change. Driving force wrongly suggests that Newtonian mechanics and determinism control and explain spontaneous processes. The usefulness of the competition of ?H versus ?S in discussing chemical change is also questioned. Entropy analyseswhich consider the contributions to the total change in entropyare advocated.
Craig, Norman C. J. Chem. Educ. 2005, 82, 827.
Natural Products |
Bioenergetics |
Biophysical Chemistry |
Calorimetry / Thermochemistry |
Thermodynamics
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Teaching Entropy Analysis in the First-Year High School Course and Beyond Thomas H. Bindel
A 16-day teaching unit is presented that develops chemical thermodynamics at the introductory high school level and beyond from exclusively an entropy viewpoint referred to as entropy analysis. Many concepts are presented, such as: entropy, spontaneity, the second law of thermodynamics, qualitative and quantitative entropy analysis, extent of reaction, thermodynamic equilibrium, coupled equilibria, and Gibbs free energy. Entropy is presented in a nontraditional way, using energy dispersal.
Bindel, Thomas H. J. Chem. Educ. 2004, 81, 1585.
Thermodynamics
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Three Forms of Energy Sigthór Pétursson
Calculations comparing the energy involved in three forms: heat, mechanical energy, and expansion against pressure.
Pétursson, Sigthór . J. Chem. Educ. 2003, 80, 776.
Calorimetry / Thermochemistry |
Nutrition |
Thermodynamics
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Rubber Bands, Free Energy, and Le Châtelier's Principle Warren Hirsch
Using a rubber band to illustrate Gibbs free energy, entropy, and enthalpy.
Hirsch, Warren. J. Chem. Educ. 2002, 79, 200A.
Noncovalent Interactions |
Thermodynamics |
Equilibrium
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Energy as Money, Chemical Bonding as Business, and Negative ΔH and ΔG as Investment Evguenii I. Kozliak
Analogy for explaining the sign (+ or -) of ?H, ?G, and ?S to introductory students.
Kozliak, Evguenii I. J. Chem. Educ. 2002, 79, 1435.
Nonmajor Courses |
Thermodynamics
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Entropy Is Simple, Qualitatively Frank L. Lambert
Explanation of entropy in terms of energy dispersal; includes considerations of fusion and vaporization, expanding gasses and mixing fluids, colligative properties, and the Gibbs function.
Lambert, Frank L. J. Chem. Educ. 2002, 79, 1241.
Thermodynamics |
Phases / Phase Transitions / Diagrams |
Gases
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Interpretation of Second Virial Coefficient Vivek Utgikar
Identifying the gel point of a polymer using a multimeter.
Utgikar, Vivek. J. Chem. Educ. 2000, 77, 1409.
Kinetics |
Lasers |
Spectroscopy |
Gases |
Thermodynamics
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Understanding Electrochemical Thermodynamics through Entropy Analysis Thomas H. Bindel
This discovery-based activity involves entropy analysis of galvanic cells. The intent of the activity is for students to discover the fundamentals of electrochemical cells through a combination of entropy analysis, exploration, and guided discovery.
Bindel, Thomas H. J. Chem. Educ. 2000, 77, 1031.
Electrochemistry |
Thermodynamics |
Electrolytic / Galvanic Cells / Potentials
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Thermodynamics and Spontaneity (the author replies) Ochs, Raymond S.
The term "spontaneous" is historical baggage.
Ochs, Raymond S. J. Chem. Educ. 1998, 75, 659.
Thermodynamics
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Thermodynamics and Spontaneity Earl, Boyd L.
The term "spontaneous" is worth keeping in the chemistry lexicon.
Earl, Boyd L. J. Chem. Educ. 1998, 75, 658.
Thermodynamics
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Letters to the Editor
The term "spontaneous" is worth keeping in the chemistry lexicon.
J. Chem. Educ. 1998, 75, 658.
Thermodynamics
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Thermodynamics and Spontaneity Raymond S. Ochs
Despite the importance of thermodynamics as the foundation of chemistry, most students emerge from introductory courses with only a dim understanding of this subject.
Ochs, Raymond S. J. Chem. Educ. 1996, 73, 952.
Thermodynamics |
Learning Theories |
Equilibrium
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Teaching Chemical Equilibrium and Thermodynamics in Undergraduate General Chemistry Classes Anil C. Banerjee
Discussion of the conceptual difficulties experienced by undergraduates when dealing with equilibrium and thermodynamics, along with teaching strategies for dealing with these difficulties.
Banerjee, Anil C. J. Chem. Educ. 1995, 72, 879.
Equilibrium |
Thermodynamics
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Solution-Phase Thermodynamics: A "Spontaneity" Activity Bindel, Thomas H.
Experimental procedure for verifying the concept of spontaneity using solution chemistry; includes data and analysis.
Bindel, Thomas H. J. Chem. Educ. 1995, 72, 34.
Aqueous Solution Chemistry |
Thermodynamics
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Probing Student Misconceptions in Thermodynamics with In-Class Writing Beall, Herbert
Examples of the use of in-class writing assignments in the teaching of thermodynamics in general chemistry are presented.
Beall, Herbert J. Chem. Educ. 1994, 71, 1056.
Thermodynamics
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An effective approach to teaching electrochemistry Birss, Viola I.; Truax, D. Rodney
By interweaving concepts from thermodynamics and chemical kinetics with those of electrochemical measurement, the authors provide students with an enriched appreciation of the utility of ideas from kinetics and thermodynamics.
Birss, Viola I.; Truax, D. Rodney J. Chem. Educ. 1990, 67, 403.
Electrochemistry |
Kinetics |
Thermodynamics
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Thermodynamics should be built on energy-not on heat and work Barrow, Gordon M.
This author looks closely at the concepts of heat, work, energy, and the laws of thermodynamics to back up his title argument.
Barrow, Gordon M. J. Chem. Educ. 1988, 65, 122.
Thermodynamics
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Converting sunlight to mechanical energy: A polymer example of entropy Mathias, Lon J.
Demonstrating entropy using an elastomer and a virtual foolproof "light engine".
Mathias, Lon J. J. Chem. Educ. 1987, 64, 889.
Thermodynamics
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The entropy of dissolution of urea Pickering, Miles
This experiment combines colorimetric techniques, thermochemical techniques, some volumetric work, and actual measurements of entropy.
Pickering, Miles J. Chem. Educ. 1987, 64, 723.
Thermodynamics
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Energy interconversions in photosynthesis Bering, Charles L.
Reviews the energetics of the light reactions of photosynthesis.
Bering, Charles L. J. Chem. Educ. 1985, 62, 659.
Photosynthesis |
Photochemistry |
Thermodynamics |
Bioenergetics
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Thermodynamics and solubilities of salts of dipositive ions Riley, Gary F.; Eberhardt, William H.
Used to illustrate the application of the principle that a decrease in free energy is a criterion for the spontaneity of a chemical reaction.
Riley, Gary F.; Eberhardt, William H. J. Chem. Educ. 1979, 56, 206.
Thermodynamics |
Precipitation / Solubility |
Physical Properties |
Reactions
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Our freshmen like the second law Craig, Norman C.
The author affirms the place of thermodynamics in the introductory chemistry course and outlines a presentation that has been used with students at this level.
Craig, Norman C. J. Chem. Educ. 1970, 47, 342.
Thermodynamics
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Principles of chemical reaction Sanderson, R. T.
The purpose of this paper is to examine the nature of chemical change in the hope of recognizing and setting forth the basic principles that help us to understand why they occur.
Sanderson, R. T. J. Chem. Educ. 1964, 41, 13.
Reactions |
Thermodynamics |
Mechanisms of Reactions |
Kinetics |
Synthesis |
Covalent Bonding |
Ionic Bonding |
Metallic Bonding
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How can you tell whether a reaction will occur? MacWood, George E.; Verhoek, Frank H.
This paper attempts to answer the title question in a clear and direct fashion.
MacWood, George E.; Verhoek, Frank H. J. Chem. Educ. 1961, 38, 334.
Thermodynamics
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