ERIC Number: EJ1062310
Record Type: Journal
Publication Date: 2015-Apr
Abstractor: As Provided
Reference Count: 17
A Molecular Explanation of How the Fog Is Produced When Dry Ice Is Placed in Water
Kuntzleman, Thomas S.; Ford, Nathan; No, Jin-Hwan; Ott, Mark E.
Journal of Chemical Education, v92 n4 p643-648 Apr 2015
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.
Descriptors: 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)
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: firstname.lastname@example.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Middle Schools; Secondary Education; Junior High Schools; High Schools; Elementary Education; Higher Education; Postsecondary Education
Authoring Institution: N/A