Lab #5: Separation of Molecules

Description

Students collect data using different solvents to identify the optimal solvent for separation. They will then illustrate the intermolecular forces that are acting on the molecules in the separation. Students evaluate the chromatograph with different solvents and establish a connection between molecular structure and intermolecular attraction to the solvent. The activity contains enough materials for 15 groups of students as well as a Teacher’s Guide and Student Study Guide Copymasters.

Kit Includes:
30mL Food Dye Blue #1, 0.5%
30mL Food Dye Yellow #5, 0.5%
30mL Food Dye Red #40, 0.5%
200mL 9:1 Petroleum Ether/Acetone
200mL Ethyl Alcohol, 95%
200mL Isopropyl Alcohol, 99%
200mL Acetone
200mL Deionized Water
15 x Chromatography Paper
30 x Glass Vials
4 x Capillary Tubes

**Materials needed but not supplied:
Metric Rulers