Foam is a dispersion of particles in a continuous medium. The particles are the gas bubbles and the medium is a liquid. When chemical reactions release gas, the chemicals foam up. Just like while baking soda and vinegar are combined, they produce foam. Baking soda releases carbon dioxide that makes carbonic acid when mixed with water. When two acids are combined, it releases a gas. This gas, when further mixed with water, produces or results in the second acid. Therefore, carbonic acid is nothing but bubbly water in which sugar and food flavourings have been added to make flavoured sodas.
Why do chemicals foam up?
