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In this chemistry activity, learners use thin layer chromatography to determine the molecular composition of different markers.

In this activity, learners will discover what colors are in different markers, and may be surprised at the results.

In this activity (page 3 of the PDF), learners will observe a physical change.

Learners use filter paper and water to analyze six different markers. They mark the paper with ink, and dip the paper in water. The water travels up the paper and dissolved ink travels with it.