A Molecular Explanation of How the Fog Is Produced When Dry Ice Is Placed in Water

Autor/inn/en	Kuntzleman, Thomas S.; Ford, Nathan; No, Jin-Hwan; Ott, Mark E.
Titel	A Molecular Explanation of How the Fog Is Produced When Dry Ice Is Placed in Water
Quelle	In: Journal of Chemical Education, 92 (2015) 4, S.643-648 (6 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
DOI	10.1021/ed400754n
Schlagwörter	Science Instruction; Scientific Principles; Science Experiments; Middle Schools; High Schools; Secondary School Science; Elementary Schools; Elementary School Science; College Science; Undergraduate Study; Demonstrations (Educational); Chemistry; Teaching Methods; Water; Equations (Mathematics) + Suchen Sie Ihr Suchwort? Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Middle school; Mittelschule; Mittelstufenschule; High school; Oberschule; Elementary school; Grundschule; Volksschule; Grundstudium; Demonstrationsexperiment; Demonstrationsmodell; Demonstrationsunterricht; Chemie; Teaching method; Lehrmethode; Unterrichtsmethode; Wasser; Equations; Mathematics; Gleichungslehre
Abstract	Everyone enjoys seeing the cloudy white fog generated when solid carbon dioxide (dry ice) is placed in water. Have you ever wondered what physical and chemical processes occur to produce this fog? When asked this question, many chemical educators suggest that the fog is produced when atmospheric water vapor condenses on cold carbon dioxide gas that sublimes through the water. But this explanation is incorrect, as shown by Luck and co-workers in an article previously published in "J. Chem. Educ." Herein, we extend this previous work by presenting some simple experiments and explanations that provide a model for how the fog forms when dry ice is placed in water. Many of these experiments can be carried out using materials found at the pharmacy, grocery store, or hardware store. The explanations involved draw from many concepts taught in general chemistry such as vapor pressure and Le Cha^telier's principle. (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