It is observed that water will wet a clean glass because the
Answer Details
Water will wet a clean glass because the adhesion of water molecules to the glass is stronger than the cohesion between water molecules themselves. Adhesion is the attraction of water molecules to the surface of the glass, while cohesion is the attraction between water molecules. Since the adhesive forces between the water and the glass surface are stronger than the cohesive forces between the water molecules, the water spreads out over the surface of the glass and wets it. This results in a thin film of water covering the surface of the glass.