What's the difference between air bubbles and soap bubbles?

Interesting question! Most bubbles come from air or gas of some sort rising through liquids. If I immerse myself in a full bathtub, small air bubbles are trapped around hairs and begin to slide around me as they roll upward. Tickles, of course! read more

Foam = air trapped in an external matrix (not necessarily water) eg. foam rubber. Foam can be considered a collection of bubbles. Not very scientific, but that's what I think. read more

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. read more