A Safer Alternative for the Mercury Beating Heart Demonstration

Autor/inn/en	Wang, Bingxing; Jiang, Xiaoying; Zhang, Yu; Yu, Lu; Zhang, Yuping
Titel	A Safer Alternative for the Mercury Beating Heart Demonstration
Quelle	In: Journal of Chemical Education, 99 (2022) 2, S.1095-1099 (5 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Wang, Bingxing)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
DOI	10.1021/acs.jchemed.1c00933
Schlagwörter	Demonstrations (Educational); Science Instruction; Chemistry; Scientific Concepts + Suchen Sie Ihr Suchwort? Demonstrationsexperiment; Demonstrationsmodell; Demonstrationsunterricht; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Chemie
Abstract	The mercury beating heart is a classic demonstration to introduce redox reactions in the classroom. Here we report a new, safer demonstration: the Galinstan beating heart. Galinstan is a commercially available eutectic alloy composed of gallium (68.5%), indium (21.5%), and tin (10%) that has low toxicity. When an iron nail touches the Galinstan drop in a sulfuric acid solution, a steady beating heart behavior is observed. The mechanism of the Galinstan beating heart was attributed to electron transfer from the Galinstan drop to the iron nail, which induces a charge redistribution and an interfacial tension gradient on the drop. (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