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  2. List of purification methods in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_purification...

    In terms of purification - material is heated, often under vacuum, and the vapors of the material are then condensed back to a solid on a cooler surface. The process thus in its essence is similar to distillation, however the material which is condensed on the cooler surface then has to be removed mechanically, thus requiring different ...

  3. Purification - Wikipedia

    en.wikipedia.org/wiki/Purification

    Purification, a 2002 Crimson Thorn album; Purification of quantum state in quantum mechanics, especially quantum information; Purification theorem in game theory and economics, a Nash equilibrium consisting of randomly mixed strategies; Water purification. Organisms used in water purification; List of purification methods in chemistry

  4. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...

  5. Refining (metallurgy) - Wikipedia

    en.wikipedia.org/wiki/Refining_(metallurgy)

    In metallurgy, refining consists of purifying an impure metal. It is to be distinguished from other processes such as smelting and calcining in that those two involve a chemical change to the raw material, whereas in refining the final material is chemically identical to the raw material.

  6. Purgatory - Wikipedia

    en.wikipedia.org/wiki/Purgatory

    The word "purgatory" has come to refer to a wide range of historical and modern conceptions of postmortem suffering short of everlasting damnation. [4] English-speakers also use the word analogously to mean any place or condition of suffering or torment, especially one that is temporary.

  7. The best air purifiers of 2025 - AOL

    www.aol.com/lifestyle/best-air-purifiers...

    Similar in size and shape to the Airmega 200M, ... the quiet-running and sleek-looking Coway Airmega 100 is a cylindrical air purifier that can purify up to 810 square feet in about an hour. Quiet ...

  8. Purified water - Wikipedia

    en.wikipedia.org/wiki/Purified_water

    Purification removes contaminants that may interfere with processes, or leave residues on evaporation. Although water is generally considered to be a good electrical conductor—for example, domestic electrical systems are considered particularly hazardous to people if they may be in contact with wet surfaces— pure water is a poor conductor.

  9. Catharsis - Wikipedia

    en.wikipedia.org/wiki/Catharsis

    Catharsis is from the Ancient Greek word κάθαρσις, katharsis, meaning "purification" or "cleansing", commonly used to refer to the purification and purgation of thoughts and emotions by way of expressing them. The desired result is an emotional state of renewal and restoration.