Specific surface area

Specific surface area refers to the total surface area of a material per unit weight or volume. It helps describe how much exposed surface is available, which influences processes like reactions, absorption, or strength. For example, a powder with many tiny particles has a higher specific surface area than a solid block of the same material because the small particles collectively have more surface exposed. This measure is important in fields like catalysis, pharmaceuticals, and material science, where surface interactions are critical to performance.