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Killian, Benjamin J.; Singletary, Steven – Journal of Chemical Education, 2022
We present a modernization of the undergraduate physical chemistry laboratory experiment for determining the speed of sound in various gases from resonant frequencies in a spherical resonator. The resonator (schematic IR = 7.5 cm) is constructed by 3D printing with eco-friendly poly(lactic acid), a commercially viable alternative to traditional…
Descriptors: Undergraduate Study, College Science, Chemistry, Physics
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Schmidt, Jonas; Huber, Tim; Mu¨ssig, Jo¨rg – Journal of Chemical Education, 2022
The knowledge of the mechanical properties of polymers and other materials is essential for several tasks in the field of materials science, like component design and material development. The tensile test is one method of determining many of the material's most defining mechanical characteristics. However, the teaching of laboratory experiments…
Descriptors: Science Instruction, Teaching Methods, Science Experiments, Laboratory Experiments
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Mei Zhang; Wangmin Hu; Wenjing Liu; Chang Lei; Jun Guo; Hongcai Shang; Junling Hou – Journal of Chemical Education, 2022
Interdisciplinary experiments within chemistry are very important for the improvements in the overall quality of the education received by students. In this work, we describe an interdisciplinary experiment that was successfully completed by undergraduate students. This training integrates multiple disciplines including natural product medicinal…
Descriptors: Science Experiments, Laboratory Experiments, Chemistry, Spectroscopy
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Ani Nvehr Davis; Stephan Georgiev Michaelov; Clayton Joshua Rogers; Leighann Rose Weber; Brycelyn Marie Boardman; Gretchen Marie Peters – Journal of Chemical Education, 2022
Polymer chemistry is an important subject in the undergraduate chemistry curriculum. It is required for ACS-certified degrees and significantly connects to real world issues like the plastic waste crisis. While some concepts of polymer chemistry can be incorporated into lecture courses, students' understanding of material properties and…
Descriptors: Chemistry, Plastics, Undergraduate Study, College Science
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Ryan M. Steinert; Micah E. Heikes; Jeremy T. Mitchell-Koch; Gary A. Baker; Katie R. Mitchell-Koch – Journal of Chemical Education, 2022
Three direct complexometric titration methods for bismuth subsalicylate determination in over-the-counter stomach relief caplets and liquids are presented, as well as a UV-vis assay, for use in student laboratories. The main difference between titration methods is the choice of indicator; either xylenol orange (XO), pyrocatechol violet (PV), or…
Descriptors: Science Instruction, Science Laboratories, Science Experiments, Laboratory Experiments
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Carvalho, Josué; Cruz, Carla – Biochemistry and Molecular Biology Education, 2020
The Förster resonance energy transfer (FRET) melting assay intends to evaluate the unfolding, denaturation process of DNA secondary structures, and its stabilization using compounds known as DNA binders, some of which are highly specific for G-quadruplex DNAs versus duplex DNAs. First, students determined the melting temperature (T[subscript m])…
Descriptors: Chemistry, Biological Sciences, Laboratory Experiments, Science Experiments
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Dutton, Nicole A. M. – American Journal of Distance Education, 2023
An increase in online science course offerings requires a closer evaluation of the online laboratory experience. While it has been established that students can successfully learn from online laboratory simulations, there is a lack of knowledge regarding factors that impact student success. Grounded in the constructivist learning theory, a unique…
Descriptors: Online Courses, Science Instruction, Science Laboratories, Microbiology
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O'Reilly, Matthew C.; Stoffregen, Stacey A.; Peterson, Karl P.; Maddox, Mitchell P., III; Schrank, Cordell – Journal of Chemical Education, 2021
The bromination of six isomeric alcohols is adapted to a discovery-based organic chemistry laboratory experiment, whereby students are provided an alcohol starting material and are charged with determining the product or product mixture produced using relevant spectroscopic data. The experiment solidifies NMR analysis skills while reinforcing the…
Descriptors: Organic Chemistry, Science Instruction, Science Laboratories, Laboratory Experiments
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Miles, Deon T.; Joslin, Evan E. – Journal of Chemical Education, 2021
We have developed a new foundation-level course at our institution that links the concept of chemical equilibria from four of the traditional subdisciplines (analytical, biochemistry, inorganic, and physical). The course, entitled Solution and Solid State Chemistry (CHEM 210), is designed to serve our chemistry and biochemistry majors, as well as…
Descriptors: College Science, Science Instruction, Chemistry, Scientific Concepts
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Vergne, Matthew J. – Journal of Chemical Education, 2021
This laboratory experiment introduces upper-division undergraduate analytical chemistry students to liquid chromatography-tandem mass spectrometry (LC-MS/MS) in a forensic application: the analysis of cocaine and metabolites of cocaine in simulated serum ostensibly from drug overdose victims. For this investigation, students developed the…
Descriptors: Science Experiments, Science Laboratories, Laboratory Experiments, Undergraduate Students
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Calheiro, L. B.; Freitas, W. P. S.; Martins, C. A.; Goncalves, A. M. B. – Physics Education, 2021
We propose an apparatus that emulates the experiment used by Geiger and Marsden in 1913 to investigate alpha particles (Rutherford) scattering. Using a widely available fused deposition modelling 3D-printer, we built a compartmented and easily assembled educational instrument. The whole apparatus is composed of a 3D-printed chamber and an…
Descriptors: Computer Peripherals, Printing, Physics, Simulation
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Wathen, Bailee; Lanehart, Emily; Woodis, Lena A.; Rojas, Anthony J. – Journal of Chemical Education, 2021
This three-part laboratory experiment investigates key aspects of the Buchwald-Hartwig amination cross-coupling reaction through guided-inquiry learning strategies. The first part of this experiment utilizes high-throughput experimentation techniques to reinforce, explore, and extend fundamental concepts that are represented in the classroom,…
Descriptors: Science Laboratories, Laboratory Experiments, Science Experiments, Undergraduate Study
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Gorman, Stephen A.; Holmes, Kimberly; Brooke, Gemma; Pask, Christopher M.; Mistry, Nimesh – Journal of Chemical Education, 2021
A traditional laboratory course with the primary learning outcome of improving students' theoretical knowledge has received much criticism over the years due to the lack of evidence that these goals have achieved. We report our efforts to redesign a traditional first-year organic and inorganic (also known as synthetic) laboratory course from…
Descriptors: Science Laboratories, Organic Chemistry, Inorganic Chemistry, Science Instruction
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Roller, Rachel M.; Sumantakul, Saichon; Tran, Michelle; Van Wyk, Andrea; Zinna, Jessica; Donelson, Destiny A.; Finnegan, Sarah G.; Foley, Gregory; Frechette, Olivia R.; Gaetgens, Jessica; Jiang, Jiani; Rinaolo, Katheryn C.; Cole, Renee S.; Lieberman, Marya; Remcho, Vincent T.; Frederick, Kimberley A. – Journal of Chemical Education, 2021
The Making Introductory Courses Real while Online (MICRO) laboratory project was developed to meet the need for hands-on experiments, focused on topics in analytical chemistry, to be delivered safely remotely or in a socially distanced in-person lab. Unlike more traditional lab experiments, MICRO laboratories use only microgram or nanogram amounts…
Descriptors: Science Instruction, Chemistry, Science Laboratories, Science Experiments
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Zapata, Fe´lix; Lo´pez-Ferna´ndez, Adria´n; Ortega-Ojeda, Fernando; Quintanilla, Gloria; Garci´a-Ruiz, Carmen; Montalvo, Gemma – Journal of Chemical Education, 2021
Infrared (IR) spectroscopy is a vibrational spectroscopic technique useful in chemical, pharmaceutical, and forensic sciences. It is essential to identify chemicals for reasons spanning from scientific research and academic practices to quality control in companies. However, in some university degrees, graduate students do not get the proficiency…
Descriptors: Spectroscopy, Chemistry, Science Instruction, Science Experiments
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