Why do sugar grains dissolve faster than sugar powdered?

Sugar grains dissolve faster than powdered sugar primarily due to their larger surface area exposed to the solvent. When sugar grains are added to a liquid, the solvent can easily penetrate and interact with their surfaces, leading to quicker dissolution. In contrast, powdered sugar has a finer texture, which can lead to clumping and reduced surface exposure, hindering the overall dissolution rate. Additionally, the increased compactness of powdered sugar can also restrict solvent access.