Astrophysics (index)


(adhesion to a surface)

Adsorption is the adhesion of the atoms or molecules of a substance to a surface. The substance can be gas, liquid, or dissolved solid. Two classes are:

  • Physisorption - Adsorption where the electronic structure of the atom or molecule remains, generally caused by Van Der Waals Force, force between molecules not from a Covalent Bond or Ionic Bond (sharing or transferring electrons).
  • Chemisorption - Adsorption involving a chemical reaction between the components.


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