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Simões, Gustavo Borges; Badolato, Paulo Victor e Silva; Ignácio, Marcelo Dante; Cerqueira, Eduardo Coelho – Journal of Chemical Education, 2020
Zinc oxide is a common additive in food, cosmetics, and medicines. Here, we describe the validation of methods to analyze two pharmaceutical samples containing ZnO--talc powder and dermal ointment--by ethylenediaminetetraacetic acid (EDTA) titration. The methods developed were implemented as a practical class to students of a Quantitative Analysis…
Descriptors: Science Instruction, College Science, Undergraduate Study, Chemistry
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Walden, Sarah L.; Frisch, Hendrik; Unterreiner, Barbara V.; Unterreiner, Andreas-Neil; Barner-Kowollik, Christopher – Journal of Chemical Education, 2020
The prompt transfer of cutting-edge science into students' curricula is a challenging task. Often research experiments are too complex or expensive to be translated into a secondary or tertiary education setting. Herein, we introduce a laboratory experiment that translates the recently developed research technique of a wavelength dependent,…
Descriptors: Chemistry, Scientific Research, Laboratory Experiments, Physics
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Nunes da Silva Júnior, José; Santos de Lima, Paulo Roberto; Sousa Lima, Mary Anne; Monteiro, Álvaro Carvalho; Silva de Sousa, Ulisses; Melo Leite Júnior, Antonio José; Vega, Kimberly Benedetti; Oliveira Alexandre, Francisco Serra; Jalles Monteiro, André – Journal of Chemical Education, 2020
This report provides information about a free-of-charge, trilingual (Portuguese, Spanish, and English) game-based application that engages high school and undergraduate students in reviewing the structural theory of organic compounds in a challenging way. In Time Bomb Game, students must disarm a time bomb on their own by correctly answering…
Descriptors: Game Based Learning, High School Students, Undergraduate Students, Learner Engagement
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Novak, Igor – Journal of Chemical Education, 2020
Theoretical yield and extent of reaction (degree of completion) are important concepts in stoichiometry and in chemical kinetics. We provide expressions describing theoretical yield (Y) and maximum extent of reaction (fractional yield, f[subscript max]) for five examples of commonly encountered reversible chemical reactions: A [equilibrium sign]…
Descriptors: Chemistry, Stoichiometry, Kinetics, Scientific Concepts
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Pölloth, Benjamin; Schwarzer, Stefan; Zipse, Hendrik – Journal of Chemical Education, 2020
An online video library comprising three different types of videos was used intensively by bachelor-level students before and throughout an introductory organic chemistry laboratory course, when presented and assigned to the experiments appropriately. An empirical study (N = 103) revealed that the utilization of videos and preferences for video…
Descriptors: Video Technology, Electronic Libraries, Science Instruction, Organic Chemistry
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Pradhan, Siddhartha Kumar; Balaji, Umapathi; Mishra, Soma; Jeevitha, Manjaiah; Swain, Shubhashree – Journal of Chemical Education, 2020
Raman spectroscopy is an important vibrational spectroscopy tool to characterize chemical compounds. As only a few photons undergo Raman scattering, enhancement of signal is a vital requirement. In this laboratory experiment, some practical aspects of Raman spectroscopy and how a simple enhancement procedure can be used to detect a Raman signal…
Descriptors: Spectroscopy, Chemistry, College Science, Science Laboratories
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Smith, Brandy A.; Hendricks, Andria J.; McFarland, Averi; Holman, Robert W.; Rodnick, Kenneth J. – Journal of Chemical Education, 2020
A chemistry course designed as an elective for chemistry, biochemistry, biology, and pharmaceutical science majors is described. The course is designed for second- through fourth-year undergraduate students. The prerequisite is first-semester, second-year undergraduate organic chemistry with the second semester of the organic sequence as a…
Descriptors: Organic Chemistry, Science Instruction, Problem Solving, Elective Courses
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Bodek, Matthew; Burch, Mary; Cannon, Joshua; Finneran, David; Geveke, Kathleen; Sinkinson, Heather; Smith, William; Tierney, John – Journal of Chemical Education, 2020
The spectrophotometric determination of the percent composition of an aspirin tablet is a common first-year, general chemistry undergraduate laboratory procedure. The experiment requires that a known amount of pure acetylsalicylic acid be quantitatively converted into the soluble disodium salicylic acid that is further reacted with excess…
Descriptors: Chemistry, Spectroscopy, Laboratory Experiments, Hands on Science
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Gao, Ruomei; Lloyd, Judith – Journal of Chemical Education, 2020
Whereas extensive studies have examined the effectiveness of inquiry-based learning in chemistry education, few have tracked undergraduate performance throughout the college chemistry curricula. In this study, we describe an instructional model of conceptual learning and inquiry-based practices (CLIP) and assess students' transformation of…
Descriptors: Inquiry, Active Learning, Introductory Courses, Advanced Courses
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Wenzel, Anna G.; Casper, Steven; Galvin, Cooper J.; Beck, Grace E. – Journal of Chemical Education, 2020
"The Science and Business of Medicinal Chemistry" was developed to provide nonscience majors with an in-depth perspective into the pharmaceutical industry. As a lecture course with a laboratory component, topics discussed include an introduction to the basic concepts of medicinal chemistry, such as drug discovery, development, and…
Descriptors: Chemistry, Nonmajors, College Science, Pharmaceutical Education
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Miao, Haoqian; Otsuki, Andrew L.; Beckett, Joseph O.; Mascal, Mark – Journal of Chemical Education, 2020
How well does the undergraduate organic chemistry laboratory curriculum prepare students for academic research, or for a bench job in industry? Running experiments that are more representative of research chemistry has the potential to better equip students for working in a research laboratory, while at the same time giving them insight into a…
Descriptors: Organic Chemistry, Undergraduate Students, College Science, Scientific Research
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Ren, Jolie; Lin, Tiffany; Sprague, Leonard W.; Peng, Iris; Wang, Li-Qiong – Journal of Chemical Education, 2020
Introducing chemical equilibrium concepts in undergraduate general chemistry promotes improved understanding of chemical reactions. We have developed an engaging laboratory experiment exploring the equilibrium of cobalt complexation in alcohols using UV-vis spectroscopy and successfully implemented in a large general chemistry class of 378…
Descriptors: Chemistry, College Science, Laboratory Experiments, Science Experiments
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Lee, Jisun; Schmink, Jason R.; Berritt, Simon – Journal of Chemical Education, 2020
A contemporary undergraduate laboratory experiment incorporating parallel microscale experimentation was developed for the well-defined palladium catalyzed Suzuki-Miyaura cross coupling of 4-fluorophenylboronic acid with both 4-chloro- and 4-bromoanisole using 11 diverse phosphine ligands and one ligandless control. This laboratory introduces…
Descriptors: College Science, Science Instruction, Undergraduate Study, Science Laboratories
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Czysz, Kamryn; Schroeder, Lianne; Clark, Ginevra A. – Journal of Chemical Education, 2020
Acid--base chemistry is an important and challenging topic for virtually all chemistry students. Recent works have focused on conceptually linking molecular and symbolic representations to experimental evidence for many chemical concepts. In this work we describe a laboratory exercise designed to address students' conceptual challenges regarding…
Descriptors: Chemistry, Laboratory Experiments, Premedical Students, Laboratory Procedures
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Frodyma, Marc – Journal of Chemical Education, 2020
Physical chemistry students often lack conceptual understanding of the measurable quantities derivatives and integrals represent in particular problems. Also, two-parameter equations of state exhibit horizontal inflections at the critical point in the "PV" isotherms, and students must employ the mathematical properties of inflections to…
Descriptors: Chemistry, Calculus, Measurement, Equations (Mathematics)
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