Chemists have changed the way that science looks at the world. By breaking substances down to the atomic level, chemists have greatly expanded our knowledge of the world. Click here to find articles about the greatest chemists in history.


Gilbert Newton Lewis

Lewis, Gilbert Newton (1875-1946), a United States chemist. Lewis made important studies in thermodynamics and its application to chemistry, and he contributed to the theory of valence (the capacity of atoms to combine with other atoms).

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  • Sir William Ramsay
    Sir William Ramsay

    Ramsay, Sir William (1852-1916), a British chemist. Ramsay discovered the elements argon (1894, with Lord Rayleigh) and neon, krypton, and xenon (1898, with M. See more »

  • Stanislao Cannizzaro
    Stanislao Cannizzaro

    Cannizzaro, Stanislao (1826-1910), an Italian chemist, advanced the understanding of the composition of chemical compounds and the use of standard chemical formulas. See more »

  • Stanley Cohen
    Stanley Cohen

    Cohen, Stanley (1922-) is an American biochemist who won the 1986 Nobel Prize in physiology or medicine with Italian developmental biologist Rita Levi-Montalcini. See more »

  • Stephen Moulton Babcock
    Stephen Moulton Babcock

    Babcock, Stephen Moulton (1843-1931), a United States agricultural chemist. He introduced the Babcock test for butterfat in 1890. See more »

  • Sune Karl Bergstrom
    Sune Karl Bergstrom

    Bergström, Sune Karl (1916-2004) was a Swedish biochemist who made important discoveries about prostaglandins—hormonelike substances I found in the prostate gland and seminal vesicles. See more »

  • Svante August Arrhenius
    Svante August Arrhenius

    Arrhenius, Svante August (1859-1927), a Swedish chemist and physicist. In 1903 he received the Nobel Prize in chemistry for his theory of electrolytic dissociation. See more »

  • Tadeus Reichstein
    Tadeus Reichstein

    Reichstein, Tadeus (1897-1996) was a Polish-born Swiss chemist who shared the 1950 Nobel Prize in physiology or medicine for his research on hormones of the cortex (outer cover) of the adrenal glands. See more »

  • Theodor Svedberg
    Theodor Svedberg

    Svedberg, Theodor (1884-1971) was a Swedish chemist who won the 1926 Nobel Prize in chemistry for his work on disperse systems. See more »

  • Theodore William Richards
    Theodore William Richards

    Richards, Theodore William (1868-1928) was an American chemist. He won the 1914 Nobel Prize in chemistry for his exact determinations of the atomic weights of chemical elements, including those used to determine virtually all other atomic weights. See more »

  • Vladimir Prelog
    Vladimir Prelog

    Prelog, Vladimir (1906-1998) was a Bosnian-born Swiss chemist who specialized in stereochemistry (the study of the spatial arrangement of atoms in molecules). See more »

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