if a bar of soap feel on some dirt, would the dirt be clean or would the soap be dirty?
Answers
The dirt be clean........................
When you see lovely little bars of lemon-thyme or lavender hand soaps on the rim of a sink, you know they are there to make you feel as fresh as a gardenia-scented daisy. We all know washing our hands is important in get rid of covid-19 but, like washcloths and towels, can the bars of hand soap we use to clean ourselves become dirty as well? Soaps are simply mixtures of sodium or potassium salts derived from fatty acids and alkali solutions during a process called saponification with scents added. When you wash your dirty hands with soap and water, the soap molecules are repelled by water and attracted to oils, which attract dirt. They cluster together and form structures called micelles, trapping the dirt and oils. The micelles are negatively charged and soluble in water, so they repel each other and remain dispersed in water—and can easily be washed away. So, yes, soap does indeed get dirty. That’s sort of how it gets your hands clean: by latching onto grease, dirt and oil more strongly than your skin does. Of course, when you’re using soap, you’re washing all those loose, dirt-trapping, dirty soap molecules away, but a bar of soap sitting on the bathroom counter or liquid soap in a bottle can also be contaminated with microorganisms.