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Definition of «Catalysis»


Catalysis: The process by which a substance speeds up a chemical reaction without being consumed or altered in the process. Substances that can accomplish this remarkable feat are termed catalysts and are of immense importance in chemistry and biology.

All enzymes are catalysts that expedite the biochemical reactions necessary for life. The enzymes in saliva, for example, accelerate the conversion of starch to glucose, doing in minutes what would otherwise take weeks.

The word "catalyst" was introduced into science by the great Swedish chemist Jons Jakob Berzelius (1779-1848) who also determined the atomic and molecular weights of thousands of substances, discovered several elements including selenium, first isolated silicon and titanium, and created the present system of writing chemical symbols and reactions.

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  • Catalysis

    Catalysis provides analytics driven creative solutions for corporations including e-mail marketing and campaign tracking.

  • catalysis: Definition from Answers.com

    Library > Literature & Language > Dictionary ( kə-tăl ' ĭ-sĭs ) n. , pl. , -ses ( -sēz ' ). The action of a catalyst, especially an increase in the rate of a ...

  • catalysis.org

    "This is a seminal work that provides the first comprehensive framework for component-based development ... Other leading methods, particularly those that have ...

  • catalysis (chemical process) -- Britannica Online Encyclopedia

    catalysis (chemical process), in chemistry, the modification of the rate of a chemical reaction, usually an acceleration, by addition of a substance not consumed during ...

  • Catalysis: Facts, Discussion Forum, and Encyclopedia Article

    Catalysis is the change in rate. of a chemical reaction. due to the participation of a substance called a catalyst. Unlike other reagent. s that participate in the chemical ...

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