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Direct linkArnold, 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
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
de Oliveira, Rodrigo R.; das Neves, Luiz S.; de Lima, Kassio M. G. – Journal of Chemical Education, 2012
A chemometrics course is offered to students in their fifth semester of the chemistry undergraduate program that includes an in-depth project. Students carry out the project over five weeks (three 8-h sessions per week) and conduct it in parallel to other courses or other practical work. The students conduct a literature search, carry out…
Descriptors: Energy, Spectroscopy, Integrated Curriculum, Science Instruction
Carroll, Anne-Marie; Kavanagh, David J.; McGovern, Fiona P.; Reilly, Joe W.; Walsh, John J. – Journal of Chemical Education, 2012
Nature is a well-recognized source of compounds of interest, but access is often an issue. One pertinent example is the cinchona alkaloids from the bark of "Cinchona calisaya." In this experiment, students at the third-year undergraduate level undertake the selective isolation and characterization of two of the four main alkaloids present in the…
Descriptors: Science Experiments, Chemistry, Science Instruction, College Science
Powers, Jennifer L.; Rippe, Karen Duda; Imarhia, Kelly; Swift, Aileen; Scholten, Melanie; Islam, Naina – Journal of Chemical Education, 2012
ELISA (enzyme-linked immunosorbent assay) is a widely used technique with applications in disease diagnosis, detection of contaminated foods, and screening for drugs of abuse or environmental contaminants. However, published protocols with a focus on quantitative detection of small molecules designed for teaching laboratories are limited. A…
Descriptors: Biochemistry, Science Laboratories, Science Instruction, College Science
Lewicki, Martin; Hughes, Stephen – Physics Education, 2012
This article describes a method for making a spectroscope from scrap materials, i.e. a fragment of compact disc, a cardboard box, a tube and a digital camera to record the spectrum. An image processing program such as ImageJ can be used to calculate the wavelength of emission and absorption lines from the digital photograph. Multiple images of a…
Descriptors: Computer Uses in Education, Photography, Science Instruction, Light
Chinni, Rosemarie C. – Journal of Chemical Education, 2012
This laboratory experiment introduces students to a different type of atomic spectroscopy: laser-induced breakdown spectroscopy (LIBS). LIBS uses a laser-generated spark to excite the sample; once excited, the elemental emission is spectrally resolved and detected. The students use LIBS to analyze a series of standard synthetic silicate samples…
Descriptors: Chemistry, Spectroscopy, Lasers, Laboratory Experiments
Li, Lili; Xiang, Haifeng; Zhou, Xiangge; Li, Menglong; Wu, Di – Journal of Chemical Education, 2012
A porphyrin-based test paper has been designed and prepared. It can be used to analyze for Al[superscript 3+] and Fe[superscript 3+] in aqueous solution. An experiment employing the test paper can help students understand basic principles of spectrophotometry and how spectrophotometry is used in analyzing for metal ions. (Contains 1 scheme and 1…
Descriptors: Chemistry, Science Instruction, College Science, Science Experiments
Nyasulu, Frazier; Nething, Daniel; Barlag, Rebecca; Wise, Lindy; Arthasery, Phyllis – Journal of Chemical Education, 2012
In this general chemistry laboratory exercise, the absorbance of [CoCl([superscript i]PrOH)[subscript 3]][superscript +], where [superscript i]PrOH is isopropyl alcohol, is used to determine the equilibrium constants for its reaction with methanol to form [CoCl([superscript i]PrOH)[subscript 2](MeOH)[subscript 3]][superscript +] in the temperature…
Descriptors: College Science, Chemistry, Scientific Concepts, Science Laboratories
Harmon, Jennifer; Coffman, Cierra; Villarrial, Spring; Chabolla, Steven; Heisel, Kurt A.; Krishnan, Viswanathan V. – Journal of Chemical Education, 2012
NMR spectroscopy has become one of the primary tools that chemists utilize to characterize a range of chemical species in the solution phase, from small organic molecules to medium-sized proteins. A discussion of NMR spectroscopy is an essential component of physical and biophysical chemistry lecture courses, and a number of instructional…
Descriptors: Spectroscopy, Science Instruction, College Science, Undergraduate Study
Leslie, Ray; Leeb, Elaine; Smith, Robert B. – Journal of Chemical Education, 2012
A series of laboratory experiments that complement a medicinal chemistry lecture course in drug design and development have been developed. The synthesis of ethyl nalidixate covers three separate experimental procedures, all of which can be completed in three, standard three-hour lab classes and incorporate aspects of green chemistry such as…
Descriptors: Chemistry, Laboratory Experiments, Science Instruction, Pharmacology
Mei-Ratliff, Yuan – Journal of Chemical Education, 2012
Trace levels of oxytetracylcine spiked into commercial milk samples are extracted, cleaned up, and preconcentrated using a C[subscript 18] solid-phase extraction column. The extract is then analyzed by a high-performance liquid chromatography (HPLC) instrument equipped with a UV detector and a C[subscript 18] column (150 mm x 4.6 mm x 3.5 [mu]m).…
Descriptors: Chemistry, Science Instruction, Food, Spectroscopy
