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Showing 31 to 45 of 3,986 results Save | Export
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Sidhwani, Indu Tucker; Chowdhury, Sushmita – Journal of Chemical Education, 2008
Qualitative analysis of inorganic salts and mixtures is an essential experiment carried out in high school, undergraduate, and postgraduate levels all over the world especially in India and South Asia. The classical technique uses H[subscript 2]S, which is highly toxic and has adverse effects on humans and the environment. Increasing awareness…
Descriptors: Chemistry, Foreign Countries, Higher Education, Undergraduate Students
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Gerdeman, Dean R.; Russell, Arlene A.; Eikey, Rebecca A. – Journal of Chemical Education, 2007
The Preparing Future Faculty (PFF) program instituted at doctorate-granting institutions across the U.S. provides mentoring and guidance to doctoral students and postdoctoral researchers interested in academic careers. The seminar curriculum content focuses on exposing participants to skills and knowledge for successful pursuit of faculty careers…
Descriptors: Career Development, Postdoctoral Education, College Faculty, Program Descriptions
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Moore, John W. – Journal of Chemical Education, 2007
David W. Galenson, a professor of economics at the University of Chicago, has used quantitative tools to describe whether teaching is an art or a science. Galenson's work has indicated that scientific methods can help in improving teaching.
Descriptors: Higher Education, Teaching (Occupation), Teaching Methods, College Faculty
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Laugier, Alexander; Garai, Jozsef – Journal of Chemical Education, 2007
Undergraduate and graduate physics and chemistry books usually state that combining the gas laws results in the ideal gas law. Leaving the derivation to the students implies that this should be a simple task, most likely a substitution. Boyle's law, Charles's law, and the Avogadro's principle are given under certain conditions; therefore, direct…
Descriptors: Thermodynamics, Undergraduate Students, Graduate Students, Higher Education
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Autschbach, Jochen – Journal of Chemical Education, 2007
We investigate why the particle-in-a-box (PB) model works well for calculating the absorption wavelengths of cyanine dyes and why it does not work for conjugated polyenes. The PB model is immensely useful in the classroom, but owing to its highly approximate character there is little reason to expect that it can yield quantitative agreement with…
Descriptors: Chemistry, Undergraduate Study, Higher Education, Experiments
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Beckett, Ronald; Sharma, Reshmi; Andric, Goja; Chantiwas, Rattikan; Jakmunee, Jaroon; Grudpan, Kate – Journal of Chemical Education, 2007
Particle separation is an important but often neglected topic in undergraduate curricula. This article discusses how the method of gravitational field-flow fractionation (GrFFF) can be used to illustrate many principles of separation science and some fundamental concepts of physical chemistry. GrFFF separates particles during their elution through…
Descriptors: Chemistry, Laboratory Experiments, Undergraduate Study, Higher Education
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Tavares, Susana C. A.; da Silva, Joaquim C. G. Esteves; Paiva, Joao – Journal of Chemical Education, 2007
Aiming at a better understanding of the problems associated with the depletion of the ozone layer, we propose several experiments to be performed by students of different levels: secondary and first-year undergraduate students. The oxidation of iodide induced by ultraviolet (UV) radiation, generated by a mercury lamp, is used as an indicator for…
Descriptors: Undergraduate Students, Chemistry, Radiation, Laboratory Experiments
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Green, Brian; Bentley, Michael D.; Chung, Bong Y.; Lynch, Nicholas G.; Jensen, Bruce L. – Journal of Chemical Education, 2007
The triterpenes are a diverse class of widely distributed natural products derived from squalene. Various cyclization and subsequent rearrangement reactions produce many complex structural types. These compounds frequently display a wide divergence of biological properties. For example the pentacyclic triterpene, betulin, is isolated from white…
Descriptors: Organic Chemistry, Chemistry, Laboratory Experiments, Higher Education
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Qvit, Nir; Barda, Yaniv; Gilon, Chaim; Shalev, Deborah E. – Journal of Chemical Education, 2007
This laboratory experiment provides a unique opportunity for students to synthesize three analogues of aspartame, a commonly used artificial sweetener. The students are introduced to the powerful and useful method of parallel synthesis while synthesizing three dipeptides in parallel using solid-phase peptide synthesis (SPPS) and simultaneous…
Descriptors: Chemistry, Laboratory Experiments, Teaching Methods, Spectroscopy
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Greco, George E. – Journal of Chemical Education, 2007
An experiment for the upper-level undergraduate laboratory is described in which students synthesize a ruthenium olefin metathesis catalyst, then use the catalyst to carry out the ring-closing metathesis of diethyl diallylmalonate. The olefin metathesis reaction was the subject of the 2005 Nobel Prize in chemistry. The catalyst chosen for this…
Descriptors: Chemistry, Laboratories, Experiments, Undergraduate Students
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Pappenfus, Ted M.; Hermanson, David L.; Ekerholm, Daniel P.; Lilliquist, Stacie L.; Mekoli, Megan L. – Journal of Chemical Education, 2007
A series of experiments for undergraduate laboratory courses (e.g., inorganic, organometallic or advanced organic) have been developed. These experiments focus on understanding the design and catalytic activity of ruthenium-indenylidene complexes for olefin metathesis. Included in the experiments are the syntheses of two ruthenium-indenylidene…
Descriptors: Chemistry, Laboratory Experiments, Undergraduate Study, Higher Education
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Martin, Eric; Kellen-Yuen, Cynthia – Journal of Chemical Education, 2007
A greener, microwave-assisted Wittig reaction has been developed for the second-semester organic teaching laboratory. Utilizing this microwave technique, a variety of styrene derivatives have been successfully synthesized from aromatic aldehydes in good yields (41-68%). The reaction not only occurs under neat reaction conditions, but also employs…
Descriptors: Reaction Time, Laboratories, Undergraduate Study, Higher Education
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Cuadros, Jordi; Yaron, David; Leinhardt, Gaea – Journal of Chemical Education, 2007
The learning opportunities that the students had in a general chemistry college course is analysed to build a model of science learning at the college level. The results suggest that authentic and contextualized home work can improve the learning in college classrooms.
Descriptors: Chemistry, College Instruction, Homework, Role
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McClusky, John V. – Journal of Chemical Education, 2007
A new tool known as the NMR Mosaic is developed which can be successfully used at universities and colleges to interpret proton NMR.
Descriptors: Science Instruction, Teaching Methods, Higher Education, Scientific Concepts
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Campbell, Dean J.; Korte, Kylee E.; Xia, Younan – Journal of Chemical Education, 2007
These laboratory experiments are designed to explore aspects of nanoscale chemistry by constructing and spectroscopically analyzing thin films of photonic crystals. Films comprised of colloidal spheres and polydimethylsiloxane exhibit diffraction-based stop bands that shift reversibly upon exposure to some common solvents. Topics covered in these…
Descriptors: Chemistry, Laboratory Experiments, College Science, Higher Education
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