Modern Chemistry, Lesson 155: Colloids
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✎ Suggest a correctionDiscusses various types of colloidal systems, including sols, emulsions, gels, and aerosols. The viewer is given the problem of calculating the tremendous increase in surface when a cube, one centimeter on an edge, is cut a million times in each of the three dimensions, giving particles of colloidal size. As a demonstration of a large surface, foam is prepared and used to smother an organic chemical fire which is not extinquished by water.
Sources
- Catalog of Classroom Teaching Films for Georgia Schools, No. 10 (Georgia Department of Education) — title, creator, length, description
Record added 2026-09-11 00:30:22 · Suggest a correction