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Direct linkFernandez, Alberto; Lopez-Torres, Margarita; Fernandez, Jesus J.; Vazquez-Garcia, Digna; Vila, Jose M. – Journal of Chemical Education, 2012
A laboratory experiment for students in advanced inorganic chemistry is described. Students prepare palladium(II) cyclometalated complexes. A terdentate [C,N,O] Schiff base ligand is doubly deprotonated upon reaction with palladium(II) acetate in a self-assembly process to give a palladacycle with a characteristic tetranuclear structure. This…
Descriptors: Laboratory Experiments, Inorganic Chemistry, College Science, Science Laboratories
Tan, T. L.; Lebron, G. B. – Journal of Chemical Education, 2012
The integrated absorbance areas of vibrational bands of CO[subscript 2], CO, and CH[subscript 4] gases in cigarette smoke were measured from Fourier transform infrared (FTIR) spectra to derive the partial pressures of these gases at different smoke times. The quantity of the three gas-phase components of cigarette smoke at different smoke times…
Descriptors: Chemistry, Teaching Methods, Laboratory Experiments, Science Instruction
Moraes, Edgar P.; da Silva, Nilbert S. A.; de Morais, Camilo de L. M.; das Neves, Luiz S.; de Lima, Kassio M. G. – Journal of Chemical Education, 2014
The flame test is a classical analytical method that is often used to teach students how to identify specific metals. However, some universities in developing countries have difficulties acquiring the sophisticated instrumentation needed to demonstrate how to identify and quantify metals. In this context, a method was developed based on the flame…
Descriptors: Science Instruction, College Science, Science Laboratories, Undergraduate Study
Fedor, Anna M.; Toda, Megan J. – Journal of Chemical Education, 2014
The hydrogen bonding of phenol can be used as an introductory model for biological systems because of its structural similarities to tyrosine, a para-substituted phenol that is an amino acid essential to the synthesis of proteins. Phenol is able to form hydrogen bonds readily in solution, which makes it a suitable model for biological…
Descriptors: Spectroscopy, Chemistry, Science Education, Investigations
Frey, E. Ramsey; Sygula, Andrzej; Hammer, Nathan I. – Journal of Chemical Education, 2014
This laboratory exercise introduces undergraduate chemistry majors to the spectroscopic and theoretical study of the polycyclic aromatic hydrocarbon (PAH), corannulene. Students explore the spectroscopic properties of corannulene using UV-vis and Raman vibrational spectroscopies. They compare their experimental results to simulated vibrational…
Descriptors: Undergraduate Students, Chemistry, Spectroscopy, Molecular Structure
Bott, Tina M.; Wan, Hayley – Journal of Chemical Education, 2013
Students sometimes have difficulty grasping the importance of when and how basic distillation techniques, column chromatography, TLC, and basic spectroscopy (IR and NMR) can be used to identify unknown compounds within a mixture. This two-part experiment uses mixtures of pleasant-smelling, readily available terpenoid compounds as unknowns to…
Descriptors: Science Instruction, College Science, Undergraduate Study, Organic Chemistry
Oi, Misato; Saito, Hirofumi; Li, Zongfeng; Zhao, Wenjun – Brain and Language, 2013
To examine the neural mechanism of co-speech gesture production, we measured brain activity of bilinguals during an animation-narration task using near-infrared spectroscopy. The task of the participants was to watch two stories via an animated cartoon, and then narrate the contents in their first language (Ll) and second language (L2),…
Descriptors: Cognitive Processes, Bilingualism, Animation, Cartoons
Ota, Toyosaku; Iida, Junzo; Sawada, Masayuki; Suehiro, Yuko; Yamamuro, Kazuhiko; Matsuura, Hiroki; Tanaka, Shohei; Kishimoto, Naoko; Negoro, Hideki; Kishimoto, Toshifumi – Child Psychiatry and Human Development, 2013
Recent developments in near-infrared spectroscopy (NIRS) have enabled non-invasive clarification of brain functions in psychiatric disorders. Functional neuroimaging studies of patients with obsessive-compulsive disorder (OCD) have suggested that the frontal cortex and subcortical structures may play a role in the pathophysiology of the disorder.…
Descriptors: Anxiety Disorders, Brain Hemisphere Functions, Spectroscopy, Control Groups
Arnold, Randy J.; Arndt, Brett; Blaser, Emilia; Blosser, Chris; Caulton, Dana; Chung, Won Sog; Fiorenza, Garrett; Heath, Wyatt; Jacobs, Alex; Kahng, Eunice; Koh, Eun; Le, Thao; Mandla, Kyle; McCory, Chelsey; Newman, Laura; Pithadia, Amit; Reckelhoff, Anna; Rheinhardt, Joseph; Skljarevski, Sonja; Stuart, Jordyn; Taylor, Cassie; Thomas, Scott; Tse, Kyle; Wall, Rachel; Warkentien, Chad – Journal of Chemical Education, 2011
A multivitamin tablet and liquid are analyzed for the elements calcium, magnesium, iron, zinc, copper, and manganese using atomic absorption spectrometry. Linear calibration and standard addition are used for all elements except calcium, allowing for an estimate of the matrix effects encountered for this complex sample. Sample preparation using…
Descriptors: Chemistry, Spectroscopy, Biochemistry, Nutrition
Segurado, Manuel A. P.; Silva, Margarida F. B.; Castro, Rita – International Journal of Mathematical Education in Science and Technology, 2011
The mathematical language and its tools are complementary to the formalism in chemistry, in particular at an advanced level. It is thus crucial, for its understanding, that students acquire a solid knowledge in Calculus and that they know how to apply it. The frequent occurrence of indeterminate forms in multiple areas, particularly in Physical…
Descriptors: Mathematics, Chemistry, Calculus, Models
Fung, Fun Man – Journal of Chemical Education, 2015
The current model of flipped classroom ensures that learning is not being restricted to the brick and mortar setting. Lessons can be conducted anywhere, anytime, as long as there is a good internet connection. Most of the flipped classroom and e-lectures are videos recording PowerPoint slides with a human voice as the audio instruction. In…
Descriptors: Chemistry, Science Laboratories, Blended Learning, Science Instruction
Thomas, Alyssa C.; Boucher, Michelle A.; Pulliam, Curtis R. – Journal of Chemical Education, 2015
Our Introduction to Research Methods course is a first-year majors course built around the idea of helping students learn to work like chemists, write like chemists, and think like chemists. We have developed this course as a hybrid hands-on/ lecture experience built around instrumentation use and report preparation. We take the product from one…
Descriptors: Qualitative Research, Statistical Analysis, Research Methodology, Methods Courses
Kurth, Laurie L.; Kurth, Mark J. – Journal of Chemical Education, 2014
Organic chemistry problems that interrelate and integrate synthesis with spectroscopy are presented. These synthesis-spectroscopy roadmap (SSR) problems uniquely engage second-year undergraduate organic chemistry students in the personal discovery of organic chemistry. SSR problems counter the memorize-or-bust strategy that many students tend to…
Descriptors: Spectroscopy, Synthesis, Organic Chemistry, Integrated Activities
Rice, Nicholas P.; de Beer, Martin P.; Williamson, Mark E. – Journal of Chemical Education, 2014
A simple low-cost experiment has been developed for the measurement of the binary diffusion coefficients of liquid substances. The experiment is suitable for demonstrating molecular diffusion to small or large undergraduate classes in chemistry or chemical engineering. Students use a cell phone camera in conjunction with open-source image…
Descriptors: Science Instruction, Chemistry, Science Experiments, College Science
Guegan, Jean-Paul; Daniellou, Richard – Journal of Chemical Education, 2012
NMR spectroscopy is a powerful tool for characterizing and identifying molecules and nowadays is even used to characterize complex systems in biology. In the experiment presented here, students learned how to apply this modern technique to probe interactions between small molecules and proteins. With the use of simple organic synthesis, students…
Descriptors: Organic Chemistry, Science Instruction, College Science, Science Laboratories
