Here's a breakdown:
* Adhesion is the attractive force between molecules of different substances.
* In the case of water and glass, water molecules are attracted to the molecules on the surface of the glass. This is due to the polarity of water molecules, which have a slightly positive end and a slightly negative end. The glass surface, often made of silica, also has polar characteristics.
Here are some examples of adhesion in action:
* Water sticking to a window: The water molecules are attracted to the glass surface.
* Glue holding paper together: The glue molecules adhere to the paper molecules.
* Paint sticking to a wall: The paint molecules adhere to the wall molecules.
In contrast, cohesion is the attractive force between molecules of the same substance. For example, the surface tension of water is a result of cohesion between water molecules.
