Surface tension in terms of energy of molecules…
Molecules touching neighboring molecules are in a relatively low state of energy. If they were not in contact with neighbors, they would have a higher energy.
Interior molecules have as many neighbors as they can possibly have. Boundary molecules are missing neighbors and so have a higher energy.
A liquid minimizes energy state by minimizing boundary molecules. This process results in a minimal surface area as the liquid surface takes its smoothest shape.
pelts into mudpuddle – splash!
new surface tension