Literaturnachweis - Detailanzeige
| Autor/inn/en | Ling, Chris D.; Bridgeman, Adam J. |
|---|---|
| Titel | Quantitative Analysis in the General Chemistry Laboratory: Training Students to Analyze Individual Results in the Context of Collective Data |
| Quelle | In: Journal of Chemical Education, 88 (2011) 7, S.979-982 (4 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0021-9584 |
| DOI | 10.1021/ed1011458 |
| Schlagwörter | Chemistry; Statistical Analysis; Science Experiments; Laboratory Experiments; Data Analysis; Data Collection; Spreadsheets; College Science; Science Instruction; Undergraduate Students; Cooperative Learning |
| Abstract | Titration experiments are ideal for generating large data sets for use in quantitative-analysis activities that are meaningful and transparent to general chemistry students. We report the successful implementation of a sophisticated quantitative exercise in which the students identify a series of unknown acids by determining their molar masses following a simple standardization exercise. The activity involves the collection and analysis of data from the entire class using standard spreadsheet software. Students deal with outliers, plot the results as a frequency histogram, and fit these histograms to normal distributions using least-squares minimization algorithms. The data-analysis skills and appreciation that are developed through the addition of this activity to a standard titration experiment can then be developed in more complex upper-level experiments for science majors. (Contains 1 table and 4 figures.) (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 | 2017/4/10 |
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