How soap makes bubbles..in water
As a child, I whiled away boring summer afternoons entertaining our dog with bubbles. I would make them as large as possible; he would eat as many as possible. As an adult, I have learned that there is no better babysitting tool than a bottle of Mr. Bubbles. So what exactly is this stuff that fascinates children, adults, and even pets?
A soap bubble is a spherical layer of soap film encapsulating air or gas. The film consists of a thin sheet of water sandwiched between two layers of soap molecules. One end of each soap molecule is hydrophilic, or attracted to water. The other end consists of a hydrophobic hydrocarbon chain that tends to avoid water. The hydrophobic ends of the soap molecules crowd to the surface, trying to avoid the water, and stick out away from the layer of water molecules. As a result, water molecules separate from each other. The increased distance between the water molecules ca ...more