An Interdisciplinary-Complementary Chemical Approach to Effective Evaluation in Undergraduate Laboratory Experiments

Autor/inn/en	Shetranjiwalla, Shegufa; Leach, Nicole; Van Belle, Lori; Kingdon, Kassidy
Titel	An Interdisciplinary-Complementary Chemical Approach to Effective Evaluation in Undergraduate Laboratory Experiments
Quelle	In: Journal of Chemical Education, 98 (2021) 9, S.2973-2981 (9 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Shetranjiwalla, Shegufa) ORCID (Kingdon, Kassidy)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
DOI	10.1021/acs.jchemed.1c00182
Schlagwörter	Science Instruction; Scientific Principles; Science Laboratories; Organic Chemistry; Spectroscopy; Scientific Concepts; Molecular Structure; Standards; College Science; Undergraduate Study + Suchen Sie Ihr Suchwort? Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Organische Chemie; Spektroskopie; Standard; Grundstudium
Abstract	Is the reductionist approach to teaching chemical principles in the laboratory adequate for students to make effective evaluations? In this work, using the example of sunscreens, students first assessed the analytical chemistry parameters of the active ingredients, later comparing and contrasting them with organic chemistry information for effective practical chemical evaluation in the laboratory. Students evaluated three commercially available brands of sunscreens by a simple, two component experiment analyzing five SPF values with UV spectroscopy using the Beer-Lambert Law to rate the most efficient sunscreen by analytical determination. To explain the differences in degree of photoprotection for sunscreens with the same SPF values in the three brands, students connected the values of molar absorption constant from Beer-Lambert Law for the UV absorbing active ingredients to their organic chemical structures and composition correlating the concentration and application amount with health and regulatory policy, protection performance, and product price. Responses from survey questions asked after students had completed the laboratory experiment and reviewed the molecular structures and regulatory information indicated that the complementary organic and the interdisciplinary regulatory information accompanying the experimental analysis and characterization positively informed and influenced their chemical evaluation. (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	2024/1/01