Explain , why the free surface of some liquid in contact with a solid in not horizontal.

The surface of water in contact with glass wall is

Explain the terms: Free fall

What is free surface energy ?

Molecules on the surface of the liquid have

Explain the solubility of a solid in a liquid.

When a liquid is in contact with a solid , the angle between the surface of the solid and the tangent drawn to the surface of the liquid at that point of contact , measured on the side of the liquid , is called .

Angle of contact with a solid surface does not depend on

A liquid dies not wet the surface of a solid, the angle of contact is

Explain the completely wets situation when liquid completely wets the solid with zero angle of contact.

In case of a liquid which does not wet a solid surface , the force of adhesion