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Alison Wallum; Zetai Liu; Joy Lee; Subhojyoti Chatterjee; Lawrence Tauzin; Christopher D. Barr; Amberle Browne; Christy F. Landes; Amy L. Nicely; Martin Gruebele – Journal of Chemical Education, 2023
As data science and instrumentation become key practices in common careers ranging from medicine to agriscience, chemistry as a core introductory course must introduce such topics to students early and at an accessible level. Advanced data acquisition and data science generally require expensive precision instrumentation and massive computation,…
Descriptors: Undergraduate Study, Data Science, Science Laboratories, Laboratory Equipment
Maria Cerrato-Alvarez; Samuel Frutos-Puerto; Eduardo Pinilla-Gil – Journal of Chemical Education, 2024
Calculating analytical uncertainties as a part of method validation is a relevant aspect of field and laboratory practices in instrumental analytical chemistry subjects, which usually require complex algorithms. This work describes the development and didactic use of an automatic and straightforward informatics tool, implemented in an Excel macro,…
Descriptors: Computation, Computer Software, Teaching Methods, Knowledge Level
Joseph S. Elias – Journal of Chemical Education, 2024
We report the design of a low-cost electrochemical workstation and open-source graphical user interface capable of performing a variety of electrochemical methods in an undergraduate teaching laboratory. The instrument--based on the popular Arduino microcontroller board--can be constructed from common components for $40 USD. The modular design of…
Descriptors: Undergraduate Students, College Science, Laboratory Equipment, Chemistry
Alain M. Beauparlant; Cassandra T. Eagle; Reza Mohseni; Colin D. McMillen – Journal of Chemical Education, 2023
We developed a single crystal X-ray crystallography experiment based on the crystal structure of sucrose (table sugar), and a more challenging experiment using Epsom salt. Both crystals are readily available in X-ray quality crystalline form. In these experiments, students mounted a crystal on a MiTeGen loop and analyzed it using a Rigaku XtaLAB…
Descriptors: Undergraduate Students, COVID-19, Pandemics, Laboratory Procedures
Eder José Assink Junior; Paulo Cesar de Jesus; Endler Marcel Borges – Journal of Chemical Education, 2023
Here, students determine the total protein content in whey protein samples using the Lowry assay. Quantitative analysis was carried out using absorbance measured at 750 nm (standard method) and 96-well-plate digital images obtained using smartphones (proposed method). The proposed method was carried out using two smartphones (1 and 2). Smartphone…
Descriptors: Chemistry, Science Education, Visual Aids, Handheld Devices
Navarre, Edward C. – Journal of Chemical Education, 2020
A simple computer interface for controlling a compact spectrograph for use as a spectrophotometer in an undergraduate teaching laboratory was developed. The project was implemented on a Raspberry Pi computer which permits the integration of a light source into the software. The interface was written in Python to facilitate modification by the user…
Descriptors: Chemistry, Science Instruction, College Science, Undergraduate Students
Kosenkov, Yana; Kosenkov, Dmitri – Journal of Chemical Education, 2021
A novel technology that employs computer vision (CV) to carry out an automatic titration experiment is presented. The experiment is designed to facilitate understanding of the basics of the CV technology and its application in chemistry among undergraduate students. The standard chemical procedure of titration has been chosen, since it is…
Descriptors: Undergraduate Students, Chemistry, Computer Uses in Education, Science Experiments
Monika Skowron; Sylwia Smarzewska – Journal of Chemical Education, 2024
A new undergraduate thin-layer chromatography laboratory experiment devoted to quantitative determination of disulfiram in Anticol formulation is presented. The proposed activity can be a part of a chromatographic methods of analysis course as well as a general chemistry course. To carry out a quantitative analysis, an image analysis technique was…
Descriptors: Undergraduate Study, Chemistry, Science Education, College Science
Baudilio Coto; Inmaculada Sua´rez; Maria Jose´ Tenorio; Miguel Angel Gonza´lez – Journal of Chemical Education, 2023
The COVID-19 pandemic and its related restrictions forced the reorganization of learning methodology and gave a central role to remote learning. Laboratory experiments are the most affected activity, and several alternatives were described. This work proposes to create calculation tools by simply programming in Visual Basic of Excel to emulate the…
Descriptors: Laboratory Experiments, Computer Software, Computation, Visual Aids
Jennifer Scoggin; K. Christopher Smith – Chemistry Education Research and Practice, 2023
In this study, we analyzed how general chemistry students generated experimental designs corresponding to general chemistry questions such as the ones typically found in general chemistry textbooks. We found that students were very successful in including experimental design aspects that were explicitly mentioned in the general chemistry…
Descriptors: Chemistry, Science Instruction, Artificial Intelligence, Computer Software
JonathanG. H. Stathakis; Jake A. Cravino; Ross Andrew Shalliker – Journal of Chemical Education, 2023
In today's global economy, the origin of the food we eat is becoming more and more difficult to identify. Verifying the authenticity of products to protect supply chains is a complicated problem that requires a multidisciplinary approach. Chemical authentication of foodstuffs often includes a mass spectrometer detector; however, they are costly…
Descriptors: Food, Chemistry, Science Instruction, Science Experiments
Junxi Zou; Xiaoyu Wang; Xuan Liu; Yuan Zheng; Wei Shao; Qing-Wei Zhang; Pingping Zhu; Lingling Li – Journal of Chemical Education, 2024
The crystalline sponge method allows for direct and precise molecular structure determination of liquid and gaseous targets and thus has been recognized as a revolutionary breakthrough in crystallography. To expose undergraduates to this cutting-edge technique, we have developed a comprehensive laboratory experiment with reaction conditions and…
Descriptors: Undergraduate Study, College Science, Laboratory Experiments, Molecular Structure
Alexander J. Norquist; Gabriel Jones-Thomson; Keqing He; Thomas Egg; Joshua Schrier – Journal of Chemical Education, 2023
Laboratory automation and data science are valuable new skills for all chemists, but most pedagogical activities involving automation to date have focused on upper-level coursework. Herein, we describe a combined computational and experimental lab suitable for a first-year undergraduate general chemistry course, in which these topics are…
Descriptors: Laboratory Experiments, Measurement Techniques, Chemistry, Science Instruction
Diego Airado-Rodri´guez; David Mun~oz de la Pen~a; Isabel Dura´n-Mera´s; Jaime Domi´nguez Manzano; Arsenio Mun~oz de la Pen~a – Journal of Chemical Education, 2022
In this paper, the development of an automatic assessor is presented, both in MATLAB and in Excel, for an analytical exercise. In particular, the emulation of an interlaboratory exercise, using the analytical determination of phosphorus in a dry detergent, carried out in the laboratory by different groups of students, was selected as a case of…
Descriptors: Electronic Learning, Chemistry, Evaluation Methods, Computer Assisted Instruction
Roberto Silva de Souza Jr.; Endler Marcel Borges – Journal of Chemical Education, 2023
This laboratory experiment was divided into four parts. In the first part, students evaluate previously published data and check their normality using histograms, Q-Q plots, the Shapiro-Wilk test, and boxplots. In the second part, two different groups were compared. First, data normality and homoskedasticity were checked by using the Shapiro-Wilk…
Descriptors: Statistics Education, Hypothesis Testing, Chemistry, Comparative Analysis