Separating Substances by Adsorption Chromatography

Target Grade: 10-14

Students learn the fundamentals of paper and thin-layer chromatography (TLC) as they answer the inquiry question, “What colors my food?” Analyze various candies, foods, tea extracts and pen ink while comparing and contrasting paper chromatography and TLC results to reference materials. Teach students molecular polarity and intermolecular forces. Ideal for AP Chemistry, Chemistry I or II, or Honors Chemistry. State of the Art instructor’s manual features background material, easy to follow stepwise protocols, assessment questions, sample data, modeled calculations, and an answer key. Additional equipment required: 24 well microtiter plates and basic laboratory supplies. Meets AP Science Practices 1 & 5.

Accomodates 24 students working in groups of 2

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