Van der Waals force
Van der Walls force is sometimes used loosely to mean for all intermolecular forces. Van der Waals forces are weaker than covalent bonds and usually weaker than hydrogen bonds, but they play a important role in supramolecular chemistry, enzymes, polymer science, nanotechnology, surface science, and condensed matter physics. Van der Waals forces define many properties of organic compounds, including their ability to dissolve.