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Hydrogen Balloon Explosions Balloons containing various substances and hydrogen are exploded, revealing characteristic flame colors. In all cases except one, the substance had been mixed with methanol and water.
Descriptive Chemistry |
Spectroscopy
Spectroscope The use of a hand-held spectroscope is demonstrated.
The Fuge Tube Diode Array SpectrophotometerB. T. Arneson, S. R. Long, K. K. Stewart, and J. J. Lagowski Presents details for adapting a diode array UVvis spectrophotometer to incorporate the use of polypropylene microcentrifuge tubesfuge tubesas cuvettes. The fuge tubes also can serve as reaction vessels, which permits the ready study of chemical systems involving heterogeneous phases by eliminating the need for tedious separations. Arneson, B. T.; Long, S. R.; Stewart, K. K.; Lagowski, J. J. J. Chem. Educ.2008, 85, 1663.
Laboratory Equipment / Apparatus |
Solutions / Solvents |
Spectroscopy |
UV-Vis Spectroscopy
Designing and Conducting a Purification Scheme as an Organic Chemistry Laboratory PracticalKate J. Graham, Brian J. Johnson, T. Nicholas Jones, Edward J. McIntee, and Chris P. Schaller Describes an open-ended laboratory practical that challenges students to evaluate when different purification techniques are appropriate. Graham, Kate J.; Johnson, Brian J.; Jones, T. Nicholas; McIntee, Edward J.; Schaller, Chris P. J. Chem. Educ.2008, 85, 1644.
IR Spectroscopy |
Microscale Lab |
Molecular Properties / Structure |
NMR Spectroscopy |
Physical Properties |
Separation Science
Revising the ACS Guidelines for Chemistry Programs in Two-Year Colleges: Exploring Changes and OpportunitiesJohn V. Clevenger, Margaret S. Richards, and Jodi L. Wesemann A draft of the next edition of the ACS Guidelines for Chemistry Programs in Two-Year Colleges contains guidelines designed to maximize the potential of students, faculty, and programs in two-year colleges; reflect changes in pedagogy, technology, and accountability; facilitate student transfer; and provide a more useful resource for strengthening programs. Clevenger, John V.; Richards, Margaret S.; Wesemann, Jodi L. J. Chem. Educ.2008, 85, 1602.
SpecScan; A Utility Program for Generating Numerical Data from Printed Forms of SpectraConstantinos E. Efstathiou Obtaining digital data from analog figures is made much easier using this Windows utility. After scanning and touching-up a figure, you can import it into SpecScan to obtain X-Y data, which can then be exported to Excel or other program for additional processing.
Spectroscopy
3D NormalModes Shockwave; A Web Application for Interactive Visualization and Three Dimensional PercNickolas D. Charistos, C. A. Tsipis, Michael P. Sigalas 3D Normal Modes is a Web application for interactive visualization and three-dimensional perception of the normal modes of molecular vibration, suitable for undergraduate students in chemistry. The application uses the Macromedia Shockwave plug-in and has been designed and developed especially for the Web. It has a simple graphical user interface and requires a download of only 120 KB, allowing it to be used even with low bandwidth Internet connections. Its performance is comparable to a desktop application.
IR Spectroscopy |
Raman Spectroscopy
Atomic Spectra and the Bohr TheoryEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
