]> Adsorption is the accumulation of atoms or molecules on the surface of a material. This process creates a film of the adsorbate (the molecules or atoms being accumulated) on the adsorbent's surface. [Wikipedia] Aeration (also called aerification) is the process by which air is circulated through, mixed with or dissolved in a liquid or substance. [Wikipedia] Any process that increases the calcium concentration of a subtance. A chemical process is a method or means of somehow changing one or more chemicals or chemical compounds. [Wikipedia] Dissolution or solvation is the process of dissolving a solid substance into a solvent to yield a solution. [Wikipedia] Electrolysis is a method of using an electric current to drive an otherwise non-spontaneous chemical reaction. Hydrolysis is a chemical reaction during which molecules of water (H2O) are split into hydrogen (H) and hydroxide anions (OH−) in the process of a chemical mechanism. In general, leaching is the extraction of certain materials from a carrier into a liquid (usually, but not always a solvent). Nucleation is the extremely localized budding of a distinct thermodynamic phase. Some examples of phases that may form via nucleation in liquids are gaseous bubbles, crystals, or glassy regions. Reaction of a substance with oxygen or incorporation of oxygen into a molecule. Photodissociation, photolysis, or photodecomposition is a chemical reaction in which a chemical compound is broken down by photons. It is defined as the interaction of one or more photons with one target molecule. [Wikipedia] Titration is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of a known reactant. A simulation approach to studying the chemical evolution of a (natural) system. The substance present in a solution in the smaller amount. For convenience, water is generally considered the solvent even in concentrated solutions with water molecules in the minority. The total amount of solute species that will remain indefinitely in a solution maintained at constant temperature and pressure in contact with the solid crystals from which the solutes were derived. Volatility is a measure of the tendency of a liquid (or solid) to evaporate into a gaseous form. Higher volatility indicates a higher tendency to evaporate and a lower volatility means that it has a lower tendency to evaporate.