Your Safer Source for Science

Since 1977

Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436

It’s a hot and sunny summer day, and you step out of the pool, cool and refreshed. Soon, however, your teeth start chattering and your lips turn blue. Water evaporating from the skin draws heat from the body, leaving you feeling cold. The “cooling effect of evaporation” is nature’s most important way of cooling not only our bodies but also the earth! How cool is evaporation?


  • Evaporation
  • Kinetic Molecular Theory
  • Polar vs. Nonpolar
  • London Dispersion Forces