The term MASS OF SMALL BUBBLES ON A LIQUID can be summarized as FOAM, which is a four-letter word. FOAM is a collection of tiny bubbles of gas that are suspended in a liquid or solid. It is created when air or gas is mixed into a liquid or solid, creating an aerated material. FOAM is commonly used in products such as soaps, detergents, and shampoos. It is also used in firefighting, insulation, and packaging materials.