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Plant Pigments & Photosynthesis

NEO25

Neo/Sci. Lab Kit for 40 students.

Masked by green chlorophyll in the summer, the abundance of pigments in plant leaves becomes highly conspicuous each fall. These pigments can be separated using the paper chromatography technique, in which the pigments migrate on a specially treated paper, with each pigment's migration rate dependent on its solubility and degree of attraction to the paper. Instead of acetone as the solvent, this experiment uses a safer alcohol solution. Students can now safely separate plant pigments, identify them by color and position on the chromatograph and relate them to their role in photosynthesis.

Key Scientific Concepts: Plant pigments, Photosynthesis, Chromatography. Cross-Curriculum Integration: Physical Science, Environmental Science, Chemistry.

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