Cohesion describes water’s attraction to itself. Cohesive
forces that occur in liquid makes intermolecular forces resist separation.
Cohesion usually occurs when a liquid comes in contact with a surface. The
cohesive force governs the shape which the liquid mimics. If cohesive force is
too strong, the liquid can divide into small numbers of spherical beads that
stand on the surface while maintaining minimal contact with the surface.
Another type of liquid force is adhesive force. An example of
this is when you see liquid on a surface that is spread out to form a thin and
relatively uniform film over the surface. This process is called wetting.
