A soap bubble is basically an air pocket enclosed inside a film of liquid soapy water. This membrane is composed mainly of water.
Bubbles form thanks to a special property of water molecules, which is the ability to attract and stick to each other.
Bubbles form due to the ability of water molecules to attract and stick to each other.
The attraction between water molecules creates surface tension . This surface tension along with the air pressure from inside and outside of the bubble creates an equilibrium, which helps to maintain the bubble for some time in the air.
However, because the equilibrium is very fragile, just a blow of the wind or their dry fingers will easily break the surface tension, causing the soapy water film to break and as a result. bubbles explode.
Besides, dry air also causes water to evaporate from the membrane. This causes the surrounding film to gradually thin and eventually explode.