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Crime Lab Chemistry

1985. GEMS. Challenged to determine which of several black pens was used to write a ransom note, students learn and use paper chromatography, as they explore the concepts of solubility, pigments, and separation of mixtures. Several mystery scenarios are suggested, with intriguing characters. In a special "Going Further" activity, students use "candy chromatography" to solve an additional mystery. 104 pages, soft cover, b&w illustrations. Grade 4-8.

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