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ERIC Number: EJ918121
Record Type: Journal
Publication Date: 2010-May
Pages: 3
Abstractor: As Provided
Reference Count: 7
ISSN: ISSN-0021-9584
Making a Chemical Rainbow
Angelin, Marcus; Ramstrom, Olof
Journal of Chemical Education, v87 n5 p504-506 May 2010
In this laboratory experiment, high school students are challenged to prepare a six-layered chemical "rainbow" in a test tube. Students start with six unknown, colorless liquids and six pigments ranging from violet to red. The experiment is problem based and forces the students to apply their knowledge of solubility and density and combine it with creative and critical thinking to come up with a successful strategy to make the rainbow. This is followed by experimental testing to find the unique solution. Finally, coloring and correct layering of the liquids produces the final and aesthetically pleasing result, a chemical rainbow. (Contains 3 figures and 3 notes.)
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:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: High Schools
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A