I am studying surface tension and I am summing up what I have learnt through books till now: → On a molecular level, due to unbalanced forces on the uppermost level, the liquid molecules tend to go down the liquid. → As the molecules go down, the uppermost layer shrinks in size and tries to go down. As it does so, such a point is reached where it can no longer suppress itself against the pressure offered by the liquid beneath it. → As a result, the layer becomes perfectly horizontal and behaves like a stretched membrane. The force per unit length experienced by the molecules on the surface film is called surface tension. → The particles on the outermost layer has some potential energy (ie Surface energy) which originates from the work done in moving upwards against the intermolecular forces. Now, my question is: How is potential energy related to the surface area?And, how is surface energy a cause for surface tension? Can anyone explain these to me? Thanks for your help! Regards Adithyan P.S- I read the wikipedia article about surface tension and went through a few other sources but I am not really convinced of how potential energy stored in the molecules lead to surface tension?