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Direct linkJeremy R. Gauthier; Darcy Burns; Jack Sheng; Jessica C. D'eon – Journal of Chemical Education, 2023
The adulteration of food products, including honeys and syrups, is of growing concern in global food markets. Detecting adulterated food products can be difficult using traditional analytical methodologies because of complex sample matrices or poor separation of key compounds. NMR is an analytical tool that circumvents some of these issues by…
Descriptors: Food, Undergraduate Study, College Science, Spectroscopy
Roger W. Giese – Journal of Chemical Education, 2023
The paired-term biochemistry exam comprises five pairs of "unrelated" biochemical terms, where the collection of pairs, overall, is unique for each student. The student selects four of the pairs and answers three short essay questions about each, with a focus on how structure leads to function at the molecular level. Both…
Descriptors: Biochemistry, Science Tests, Vocabulary, Science Education
Katharine E. Johanesen; Lily L. Claiborne; Elisabeth S. Falk; Karla Parsons Hubbard; Karen E. Kohfeld; Elisabeth S. Nadin; Amanda H. Schmidt – Journal of Geoscience Education, 2024
Conventional letter- or number-based grading systems, though ubiquitous at all levels of education, do not optimize the learning experience. The philosophy of "ungrading" includes a variety of approaches that decenter or even remove numeric or letter scoring of student work in favor of descriptive feedback, opportunities for revision,…
Descriptors: Grading, Geology, College Science, Undergraduate Study
Steven Marquez; Travis Varra; Cami Christensen; Om Rajasekharan; Carter Dojan; Janelle Hobbs; Rhys A. Otten; Luke Salzer; Jennifer D. Schuttlefield Christus; Justin B. Sambur – Journal of Chemical Education, 2023
Scanning probe-based microscopes (SPMs) are widely used in biology, chemistry, materials science, and physics to image and manipulate matter on the nanoscale. Unfortunately, high school and university departments lack expensive SPM tools and materials microscopy activities to educate a large number of students in this vital SPM imaging technique.…
Descriptors: Laboratory Equipment, Computer Peripherals, Science Education, Technology Uses in Education
Gianmarc Grazioli; Adam Ingwerson; David Santiago Jr.; Patrick Regan; Heekun Cho – Journal of Chemical Education, 2023
Computational chemistry instructional activities are often based around students running chemical simulations via a graphical user interface (GUI). GUI-based activities offer many advantages, as they enable students to run chemical simulations with a few mouse clicks. Although these activities are excellent for introducing students to the…
Descriptors: Computation, Chemistry, Teaching Methods, Science Education
Rau´l Arrabal; Marta Mohedano; Endzhe Matykina – Journal of Chemical Education, 2022
The COVID-19 pandemic has forced many higher education institutions to offer their courses online, which is quite challenging when implementing laboratory sessions. Here we describe a web-based teaching resource consisting of a metallographic atlas with more than 200 micrographs corresponding to pure metals, binary alloys, steels, cast irons, and…
Descriptors: Metallurgy, Web Sites, Computer Assisted Instruction, Visual Aids
Jarabak, Charlotte; Mutton, Troy; Ridley, Damon D. – Journal of Chemical Education, 2020
Properties of chemical substances drive a large portion of research in the sciences, but properties are very difficult to search in full text documents, and while searches in chemical information retrieval resources may help, the effective use of such resources may require considerable knowledge of the indexing and excerption policies in the…
Descriptors: Chemistry, Science Instruction, College Science, Graduate Study
Piechota, Eric J.; Meyer, Gerald J. – Journal of Chemical Education, 2019
A central theme in introductory and advanced chemical education courses pertains directly to the transfer of electrons between atoms, ions, or molecules. This article presents theoretical treatments of electron transfer with specific attention toward applying these principles to experiment. The goal is to revitalize teaching electron transfer at…
Descriptors: Chemistry, College Science, Scientific Concepts, Science Instruction
Maksim Dolmat; Claire Thomas; Veronika Kozlovskaya; Eugenia Kharlampieva – Journal of Chemical Education, 2022
We have developed a multivariate and multidisciplinary lab experiment on the synthesis of alginate hydrogel beads of various sizes and dye encapsulation for upper-division undergraduate and graduate students. This experiment introduces students to several common concepts in polymer chemistry, materials science, and drug delivery. The experiment…
Descriptors: Laboratory Experiments, Color, Undergraduate Study, Graduate Study
Senger, Kim; Betlem, Peter; Birchall, Thomas; Buckley, Simon J.; Coakley, Bernard; Eide, Christian H.; Flaig, Peter P.; Forien, Melanie; Galland, Olivier; Gonzaga, Luiz; Jensen, Maria; Kurz, Tobias; Lecomte, Isabelle; Mair, Karen; Malm, Rie Hjørnegaard; Mulrooney, Mark; Naumann, Nicole; Nordmo, Ivar; Nolde, Nils; Ogata, Kei; Rabbel, Ole; Schaaf, Niklas W.; Smyrak-Sikora, Aleksandra – Journal of Geoscience Education, 2021
The high Arctic is a remote place, where geoscientific research and teaching require expensive and logistically demanding expeditions to make use of the short field seasons. The absence of vegetation facilitates the use of modern photogrammetric techniques for the cost-effective generation of high-resolution digital outcrop models (DOMs). These…
Descriptors: Earth Science, Models, Databases, Foreign Countries
Faraj, Santiago Enrique; Rossi, Rolando Carlos; Montes, Mónica Raquel – Journal of Biological Education, 2021
This report describes the implementation of a laboratory exercise for an advanced biochemistry or enzyme kinetics class at the undergraduate or graduate level, designed to improve understanding of protein conformational changes associated with the binding of a ligand. Students measure the fluorescence changes induced by the conformational…
Descriptors: College Science, Biochemistry, Science Instruction, Science Laboratories
Pfister, Hans – Physics Teacher, 2021
The Ball Bearing High Voltage generator is a fairly simple and transparent apparatus that can serve as a tool to motivate conceptual descriptions and calculations in electrostatics that are normally presented to our students in a rather dry and matter-of-fact fashion. For example, instead of posing a problem in the typical textbook form of…
Descriptors: Demonstrations (Educational), Electronics, Science Equipment, Scientific Concepts
Baosen Zhang; Ariana Frkonja-Kuczin; Zhong-Hui Duan; Aliaksei Boika – Journal of Chemical Education, 2023
Computer vision (CV) is a subfield of artificial intelligence (AI) that trains computers to understand our visual world based on digital images. There are many successful applications of CV including face and hand gesture detection, weather recording, smart farming, and self-driving cars. Recent advances in computer vision with machine learning…
Descriptors: Classification, Laboratory Equipment, Visual Aids, Optics
Šarac, Bojan; Hadži, San – Journal of Chemical Education, 2021
A Microsoft Excel workbook has been developed to simplify the quantitative analysis of experimentally measured titration curves for diprotic and triprotic amino acids such as glycine, arginine, histidine, and glutamate. Students perform the titration, enter the data into the worksheet, and manually adjust the resulting pK[subscript a] values to…
Descriptors: Science Instruction, College Science, Undergraduate Study, Spreadsheets
Download full textDas, Arijit – Online Submission, 2018
In this approach, formulae based mnemonics by counting lone pair of electrons (localized or delocalized) have been highlighted by innovative and time economic way to enhance interest of students' who belong to paranoia zone of chemistry for the prediction of Hybridization state of hetero atom and Aromatic, Anti aromatic, non aromatic behavior of…
Descriptors: Science Instruction, College Science, Chemistry, Scientific Concepts
