Literaturnachweis - Detailanzeige
| Autor/inn/en | Via, Garrhett; Williams, Chelsey; Dudek, Raymond; Dudek, John |
|---|---|
| Titel | Decay Kinetics of UV-Sensitive Materials: An Introductory Chemistry Experiment |
| Quelle | In: Journal of Chemical Education, 92 (2015) 4, S.747-751 (5 Seiten)Infoseite zur Zeitschrift
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| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0021-9584 |
| DOI | 10.1021/ed500419s |
| Schlagwörter | Kinetics; Introductory Courses; Chemistry; Science Experiments; Spectroscopy; Undergraduate Students; Hands on Science; Teaching Methods; Science Activities; Scientific Concepts; Scientific Methodology; Educational Practices; Science Education; Laboratory Experiments |
| Abstract | First-order kinetic decay rates can be obtained by measuring the time-dependent reflection spectra of ultraviolet-sensitive objects as they returned from their excited, colored state back to the ground, colorless state. In this paper, a procedure is described which provides an innovative and unique twist on standard, undergraduate, kinetics experiments. Specifically, UV-sensitive beads and threads are utilized as the time changing system, as opposed to more conventional wet chemical systems. The spectral data is collected and analyzed by the students during a standard laboratory session, and the class results are pooled so that the reflection spectra and decay curves of all colors for both UV sensitive beads and threads can be compared. This new approach to a kinetics experiment increases student interest in a safe, inexpensive, and environmentally friendly way. (As Provided). |
| Anmerkungen | Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2020/1/01 |
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