Question

What is surface tension? What is it caused by? Why the surface tension is also called surface energy?

Answer 1

Explanation:

Surface tension you can think of as simply the force that the system experiences due to the minimization of surface energy. It turns out that breaking the surface would increase it, so the liquid is not happy.

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Answer 2

Explanation:

They are able to do this because of the phenomenon known as surface tension. Because of cohesive forces across liquid molecules, surface tension causes the existence of a thin film (layer) across the surface. Surface energy is the work done per unit area to produce this new surface.