• The surface tension of a liquid is a measure of the elastic force in the liquid’s surface.
  • Liquids that have strong intermolecular forces, like the hydrogen bonding in water, exhibit the greatest surface tension.
  • Surface tension allows objects that are denser than water, such as the paper clip shown in B in Figure below, to float on its surface.
  • It is also responsible for the beading up of water droplets on a freshly waxed car because there are no attractions between the polar water molecules and the nonpolar wax.
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