Surface molecules are unbalanced
They experience a different set of attractions than molecules surrounded by liquid.
Droplets tend toward compact shapes
Reducing surface area lowers surface energy.
Soap changes the interface
Surfactants reduce water's surface tension and help stabilize thin films.
Bubbles are thin liquid films
A soap bubble traps gas between two surfactant-covered liquid surfaces.
This page explains scientific concepts for general learning. It does not replace laboratory safety procedures, professional engineering guidance, or individualized medical advice.