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Absorption facts for kids

Kids Encyclopedia Facts

Absorption is a condition in which something takes in another substance. It is a physical or chemical phenomenon or process, in which atoms, molecules, or ions enter in the inner part (called "bulk") of a gas, liquid, or solid material.

This is a different process from adsorption. Molecules undergoing absorption are going deep into the volume of the material, instead in the case of adsorption molecules stop at the surface of the material. A more general term is sorption, which covers absorption, adsorption, and ion exchange.

Other meanings of "absorption" are:

See also

  • Adsorption, the formation of a gas or liquid film on a solid surface
  • Digestion, the uptake of substances by the gastrointestinal tract
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Absorption Facts for Kids. Kiddle Encyclopedia.