Modern Chemistry, Lesson 146: Measuring the Size of a Molecule - an Experiment

Demonstrates one of the classical experiments of surface chemistry. Consists of spreading out on the surface of clean water a thin film of the fatty acid, stearic acid. Explains that one end of the stearic acid molecule is thought to stick into the water, the rest of the molecule sticking up into the air.

Sources

  1. Catalog of Classroom Teaching Films for Georgia Schools, No. 10 (Georgia Department of Education) — title, creator, length, description