Test: MCAT Biology

Chromatography is a technique used to separate compounds that are in solution with one another. In paper chromatography, a piece of paper is dotted with the sample mixture near the bottom and then placed in a liquid solvent. The solvent then dissolves the sample and separates the compounds as it moves up the paper.

9.

Which of the following statements is true concerning paper chromatography?

Less massive compounds will be lower on the paper compared to more massive compounds.

More massive compounds will be lower on the paper compared to less massive compounds.

Polar compounds will be higher on the paper compared to nonpolar compounds.

Nonpolar compounds will be higher on the paper compared to polar compounds.

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