The reason why soap, water and air makes bubbles is because air and water molecules don't like to stick together but will stick to different ends of soap molecules. Usually however, we use a bit of water and soap and a lot of air. Bubbles are made up of air surrounded by a thin film of water. The film, wraps around moving air, trapping the air within. A soapy solution allows the "film" of the water to stretch. Soapy bubbles are stronger than plain ones because the soap lessens the surface tension, allowing the skin to stretch.