Hand Washing
by Cristina Pedrazzini/science Photo Library
Title
Hand Washing
Artist
Cristina Pedrazzini/science Photo Library
Medium
Photograph - Photograph
Description
Hand washing using soap. Soaps are water soluble sodium or potassium salts of fatty acids. They are made from fats and oils through chemical treatment with a strong alkali. They act as a surfactant - a chemical which aids the cleaning process through inhibiting surface tension in water.
Uploaded
September 25th, 2018
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