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Direct linkBaldwin, Bruce W.; Kuntzleman, Thomas S. – Journal of Chemical Education, 2018
The separation of chamazulene from hydrophilic contaminants present in blue tansy oil provides a visually engaging example of two common techniques: extraction and thin-layer chromatography (TLC). This application uses liquid CO[subscript 2] as a lipophilic solvent to pull a brilliant blue hydrocarbon molecule, chamazulene, out of or through a…
Descriptors: Science Instruction, Science Laboratories, College Science, Organic Chemistry
Baldwin, Bruce W.; Hasbrouck, Scott; Smith, Jordan; Kuntzleman, Thomas S. – Journal of Chemical Education, 2010
In "JCE" Activity #67, "Flame Tests: Which Ion Causes the Color?", Michael Sanger describes how to conduct flame tests with household items. We have used this activity in outreach settings, and have extended it in a variety of ways. For example, we have demonstrated large-scale strontium (red), copper (green), and carbon (blue) flames using only…
Descriptors: Chemistry, Science Instruction, Scientific Concepts, Scientific Principles
