Absorption is basically where something takes in another substance. Absorption, in chemistry, is a
physical or chemical phenomenon or a process in which atoms, molecules, or ions enter some bulk
phase - gas, liquid or solid material. This is a different process from adsorption, since molecules
undergoing absorption are taken up by the volume, not by the surface (as in the case for adsorption). A
more general term is sorption which covers adsorption, absorption, and ion exchange.
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