Cohesive forces between molecules cause the surface of a liquid to contract to the smallest possible surface area. Molecules on the surface are pulled inward by cohesive forces, reducing the surface area. ... Molecules inside the liquid experience zero net force, since they have neighbors on all sides.
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Cohesive forces between molecules cause the surface of a liquid to contract to the smallest possible surface area. Molecules on the surface are pulled inward by cohesive forces, reducing the surface area. ... Molecules inside the liquid experience zero net force, since they have neighbors on all sides.