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Sedunov, Boris – International Society for Technology, Education, and Science, 2021
The contemporary Human activity utilizes huge volumes of digital data to solve efficiently multiple socio-economic, scientific and technical problems. Now the big data analysis is mainly oriented to the socioeconomic sphere with a goal to lift the profit. The science and technology to penetrate deeper in the nature of objects and systems under…
Descriptors: Teaching Methods, Data Analysis, Scientific Research, Fuels
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Wnek, Gary E. – Journal of Chemical Education, 2017
Small organic molecules offer a rich opportunity to discuss the interplay of chemical structure with properties such as the melting point and phenomena such as glass formation and can form the basis of fundamental considerations of structure-property relationships in macromolecules. Of particular importance are thermal transitions, specifically…
Descriptors: Organic Chemistry, Molecular Structure, Teaching Methods, Plastics
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Rizvi, Masood Ahmad; Dangat, Yuvraj; Shams, Tahir; Khan, Khaliquz Zaman – Journal of Chemical Education, 2016
An unfavorable pH can block a feasible electron transfer for a pH dependent redox reaction. In this experiment, a series of potentiometric titrations demonstrate the sequential loss in feasibility of iron(II) dichromate redox reaction over a pH range of 0-4. The pH at which this reaction failed to occur was termed as a pH locked reaction. The…
Descriptors: Undergraduate Students, Chemistry, Thermodynamics, Spectroscopy
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Lamichhane, Roshan; Reck, Cathrine; Maltese, Adam V. – Chemistry Education Research and Practice, 2018
Misconceptions are the "the old, the bad, and the ugly" prior knowledge, ideas or conceptions that the learners have that hinder their further learning in science. Several types of misconceptions that undergraduate students hold about reaction coordinate diagrams (from here on we use the term "reaction coordinate diagrams" and…
Descriptors: Chemistry, Multiple Choice Tests, Interviews, Undergraduate Students
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Meyburg, Jan Philipp; Diesing, Detlef – Journal of Chemical Education, 2017
This article describes the implementation and application of a metal deposition and surface diffusion Monte Carlo simulation in a physical chemistry lab course. Here the self-diffusion of Ag atoms on a Ag(111) surface is modeled and compared to published experimental results. Both the thin-film homoepitaxial growth during adatom deposition onto a…
Descriptors: Monte Carlo Methods, Computer Simulation, Chemistry, Laboratory Experiments
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Crane, Johanna L.; Anderson, Kelly E.; Conway, Samantha G. – Journal of Chemical Education, 2015
This advanced undergraduate laboratory experiment involves the synthesis and characterization of a metal-organic framework with microporous channels that are held intact via hydrogen bonding of the coordinated water molecules. The hydrothermal synthesis of Co[subscript 3](BTC)[subscript 2]·12H[subscript 2]O (BTC = 1,3,5-benzene tricarboxylic acid)…
Descriptors: Science Instruction, Thermodynamics, Spectroscopy, Undergraduate Study
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Ginzburg, Aurora L.; Baca, Nicholas A.; Hampton, Philip D. – Journal of Chemical Education, 2014
A traditional organic chemistry laboratory experiment involves the acid-catalyzed isomerization of (-)-menthone to (+)-isomenthone. This experiment generates large quantities of organic and aqueous waste, and only allows the final ratio of isomers to be determined. A "green" modification has been developed that replaces the mineral acid…
Descriptors: Science Instruction, Organic Chemistry, Science Laboratories, Scientific Concepts
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Morton, Janine G.; Joe, Candice L.; Stolla, Massiel C.; Koshland, Sophia R.; Londergan, Casey H.; Schofield, Mark H. – Journal of Chemical Education, 2015
Variable temperature NMR spectroscopy is used to determine the ?H° and ?S° of hydrogen bond formation in a simple diamide. In this two- or three-day experiment, students synthesize N,N'-dimethylmalonamide, dimethylsuccinamide, dimethylglutaramide, or dimethyladipamide from methylamine and the corresponding diester (typically in 50% recrystallized…
Descriptors: Thermodynamics, Chemistry, Spectroscopy, Science Experiments
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Haglund, Jesper; Andersson, Staffan; Elmgren, Maja – Chemistry Education Research and Practice, 2015
Thermodynamics, and in particular entropy, has been found to be challenging for students, not least due to its abstract character. Comparisons with more familiar and concrete domains, by means of analogy and metaphor, are commonly used in thermodynamics teaching, in particular the metaphor "entropy is disorder." However, this particular…
Descriptors: Thermodynamics, Scientific Concepts, Chemical Engineering, Concept Formation
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Canagaratna, Sebastian G.; Maheswaran, M. – Journal of Chemical Education, 2013
For physical measurements, the compositions of solutions, especially electrolyte solutions, are expressed in terms of molality rather than mole fractions. The development of the necessary thermodynamic equations directly in terms of molality is not common in textbooks, and the treatment in the literature is not very systematic. We develop a…
Descriptors: Science Instruction, College Science, Scientific Concepts, Equations (Mathematics)
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Albrecht, Birgit – Journal of Chemical Education, 2014
The Wittig reaction is one of the most useful reactions in organic chemistry. Despite its prominence early in the organic chemistry curriculum, the exact mechanism of this reaction is still under debate, and this controversy is often neglected in the classroom. Introducing a simple computational study of the Wittig reaction illustrates the…
Descriptors: Undergraduate Students, Laboratory Experiments, Computation, Organic Chemistry
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Hitt, Austin Manning; Townsend, J. Scott – Science Activities: Classroom Projects and Curriculum Ideas, 2015
Elementary, middle-level, and high school science teachers commonly find their students have misconceptions about heat and temperature. Unfortunately, student misconceptions are difficult to modify or change and can prevent students from learning the accurate scientific explanation. In order to improve our students' understanding of heat and…
Descriptors: Science Instruction, Scientific Concepts, Misconceptions, Heat
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Martini, Sheridan R.; Hartzell, Cynthia J. – Journal of Chemical Education, 2015
Computational chemistry is commonly addressed in the quantum mechanics course of undergraduate physical chemistry curricula. Since quantum mechanics traditionally follows the thermodynamics course, there is a lack of curricula relating computational chemistry to thermodynamics. A method integrating molecular modeling software into a semester long…
Descriptors: Science Instruction, Chemistry, Quantum Mechanics, College Science
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McCain, Daniel F.; Allgood, Ottie E.; Cox, Jacob T.; Falconi, Audrey E.; Kim, Michael J.; Shih, Wei-Yu – Journal of Chemical Education, 2012
Only a few pedagogical experiments have been published dealing specifically with the hydrophobic interaction though it plays a central role in biochemistry. A set of experiments is presented in which students partition a variety of colorful indicator dyes in biphasic water/organic solvent mixtures. Students monitor the partitioning visually and…
Descriptors: Physics, Biochemistry, Science Laboratories, Water
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Balazovic, Marek; Tomasik, Boris – Physics Education, 2012
In the 1960s, Tanzanian student Erasto Mpemba and his teacher published a paper with the title "Cool?" in this journal (Mpemba and Osborne 1969 "Phys. Educ." 4 172-5). They claimed that hot water freezes more quickly than cold water. The paper not only led to a wave of discussion, and more publications about this topic, but also to a whole series…
Descriptors: Physics, Teaching Methods, Water, Science Instruction
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