February Scholars Session 2020
Column Chromatography
Column Chromatography is a technique that uses a long, transparent tube or column to separate the different chemicals in a mixture or solution. For this lab, we used this chromatography technique to separate the two food dyes found in grape soda. In this experiment, students used nonpolar (hydrophobic) Space Sand, which interacted with and grabbed onto other nonpolar chemicals from the grape soda in their chromatography columns. Based on the differences in chemical properties, the interaction between the sand and grape soda caused the colors to separate.