👉 A froth is a liquid or solid mixture of two or more substances that floats on water. It is formed when a substance dissolves in another substance, creating a homogeneous mixture with no separate phases present. Froths can be made by mixing two liquids or solids together, and they are often used as a method to dissolve organic compounds or to prepare solutions for chemical reactions. Froths are important in the natural world, where they play a role in many processes such as fermentation, cooking, and cleaning