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Journal of Chemical Education10173
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Showing 91 to 105 of 10,173 results Save | Export
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Rodríguez Ortega, P. G.; Gilbert-López, B.; Esteo Donaire, S.; Montejo, M. – Journal of Chemical Education, 2019
The use of methanol-water mixtures as solvents for sample preparations is common in many instrumental analytical procedures for compound quantification at trace concentration levels. The reliability of the analytical method depends upon several factors including consistency of instrumental setup and calibration, quality of standards used and…
Descriptors: Science Instruction, Chemistry, Spectroscopy, Science Laboratories
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Morales, Christine; Chen, Franklin – Journal of Chemical Education, 2019
The effects of substitution on reaction rates are at the heart of both physical chemistry and organic chemistry. In this paper, we present a computational laboratory module to explore the effects of group substitution and isotopic substitution on reaction rates by using a readily accessible graphical interface, a computational engine, and…
Descriptors: Science Instruction, Chemistry, Science Laboratories, Computation
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Bucholtz, Kevin M.; Copeland, Madison M.; Swanger, Stefanie D. – Journal of Chemical Education, 2019
Higher education is faced with the challenging problem of preparing students for their careers while developing them to be well-rounded, life-long learners. Employers report they desire candidates who use a broader set of skills and have higher levels of learning and knowledge to meet the increasingly complex demands of today's workplace. At…
Descriptors: Science Instruction, Chemistry, College Science, Interdisciplinary Approach
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Peng, Zhe; Jimenez, Jose L. – Journal of Chemical Education, 2019
KinSim is a research-grade, interactive, user-friendly, open-source, and visual software for kinetics modeling of environmental chemistry and other applications. Students without any computer-programming background and limited knowledge of environmental chemistry can use KinSim, which also includes multiple features and functionality dedicated to…
Descriptors: Chemistry, Science Instruction, Kinetics, Environmental Education
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Rattanakit, Parawee; Maungchang, Rasimate – Journal of Chemical Education, 2019
A laboratory experiment utilizing locally available Indian Gooseberry ("Phyllanthus emblica" Linn.) extract as a bioreagent to determine iron(III) is described with the goal of providing students with hands-on experience in spectrophotometry and green chemistry. Spectrophotometry was used to measure the concentration of the complex…
Descriptors: Chemistry, Science Instruction, Environment, Science Laboratories
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Stankus, Brian; White, Rosemary; Abrams, Binyomin – Journal of Chemical Education, 2019
Chromatography is a ubiquitous technique in analytical chemistry, and high-performance liquid chromatography (HPLC) is the industry standard for quantitation of components in solution mixtures. However, demonstrating the principles of liquid chromatography to undergraduates via HPLC-based experiments often proves ineffective because of the fully…
Descriptors: Chemistry, Science Instruction, College Science, Undergraduate Study
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Pérez-Torres, Jhon Fredy – Journal of Chemical Education, 2019
The aim of this article is to present a set of simple exercises that help the students of a second course in quantum chemistry to understand that some molecular properties do not improve even when the molecular energy improves with an increasing number of basis functions in the expansion of the wavefunction. The essential idea is to create a…
Descriptors: Chemistry, Science Instruction, College Science, Undergraduate Study
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Shultz, Ginger V.; Zemke, Jennifer M. – Journal of Chemical Education, 2019
The development of expertise in chemical information literacy requires practicing these skills in the context of chemistry work. The integration of information literacy in problem-based learning is an instructional strategy that can be used to situate skill development in the chemistry classroom. This work describes a mixed-methods approach to…
Descriptors: Chemistry, Science Instruction, Science Laboratories, Problem Solving
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McKee, James R.; Zanger, Murray; Chiariello, Carmine; McKee, James A.; Dorfner, Walter; Fasella, Elisabetta; Koo, Yumee – Journal of Chemical Education, 2019
The reduction of alkenes usually involves a hydrogen source and a catalyst. This process is both expensive and not well-suited for a large teaching laboratory. This paper presents an alternative procedure using a mixture of cobalt chloride and sodium borohydride to achieve the reduction of methyl oleate to methyl stearate. This procedure is safe,…
Descriptors: Laboratory Procedures, Science Instruction, Chemistry, Spectroscopy
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Fisher, Adam J.; Keeley, Monica M.; Lane, Jeremy M.; Furlan, Ping Y. – Journal of Chemical Education, 2019
We describe a 2 h general-chemistry experiment that introduces college students not only to the concepts, synthesis, and applications of nanomaterials at an early stage but also the use of a spectrophotometer for quantification and unknown determination based on Beer's Law. The procedure involves students (1) preparing a nanocomposite by…
Descriptors: Spectroscopy, Water Pollution, Chemistry, Science Experiments
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Lam, Chun Ho; Escande, Vincent; Mellor, Karolina E.; Zimmerman, Julie B.; Anastas, Paul T. – Journal of Chemical Education, 2019
We herein report an efficient aerobic oxidative cleavage of meso-hydrobenzoin to benzaldehyde using a heterogeneous earth-abundant metal oxide catalyst. The reaction can be carried out at 70 °C in ethanol and uses a balloon filled with O2 as oxidant. Reagents are simple and have long shelf lives, and the whole laboratory exercise can be done in…
Descriptors: Laboratory Experiments, Science Instruction, College Science, Undergraduate Study
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Koshut, W. J.; Arnold, A. M.; Smith, Z. C.; Wright, Z. M.; Sydlik, S. A. – Journal of Chemical Education, 2019
This work describes a semester-long learning module designed to equip students with the analytical and practical skills necessary to be successful in an interdisciplinary polymer research environment. This learning module combines laboratory experiments involving both synthesis and materials characterization with lectures in polymer theory, and…
Descriptors: Plastics, Hands on Science, Laboratory Experiments, Lecture Method
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Farhat, Naha J.; Stanford, Courtney; Ruder, Suzanne M. – Journal of Chemical Education, 2019
Assessments can provide instructors and students with valuable information regarding student's level of knowledge and understanding, in order to improve both teaching and learning. In this study, we analyzed departmental assessment quizzes given to students at the start of Organic Chemistry 2, over an eight year period. This assessment quiz was…
Descriptors: Organic Chemistry, Teaching Methods, Science Instruction, Science Tests
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Tantillo, Dean J.; Siegel, Justin B.; Saunders, Carla M.; Palazzo, Teresa A.; Painter, Phillip P.; O'Brien, Terrence E.; Nuñez, Nicole N.; Nouri, Dustin H.; Lodewyk, Michael W.; Hudson, Brandi M.; Hare, Stephanie R.; Davis, Rebecca L. – Journal of Chemical Education, 2019
A series of computational laboratory experiments aimed at teaching students principles of rational drug design are described and evaluated. These experiments range from an introduction to viewing protein-ligand complexes to optimizing geometries of potential drugs with quantum chemistry and automated docking. Student feedback indicates that such a…
Descriptors: Undergraduate Students, Laboratory Experiments, Chemistry, College Science
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Monsen, Paige J.; Luzzio, Frederick A. – Journal of Chemical Education, 2019
A laboratory experiment is detailed that entails the separation and derivatization of the artificial sweetener sucralose from a commercially available sweetener mixture. The experiment utilizes 1 g packets of a sucralose-based artificial sweetener and involves the separation of the synthetic sweetener from the more polar bulk additives by…
Descriptors: Hands on Science, Laboratory Experiments, Science Experiments, Chemistry
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