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Helen Murray Free (1923–2021), American chemist who developed self-testing systems for diabetes; Carl Remigius Fresenius (1818–1897), German chemist; Ida Freund (1863–1914), first woman university chemistry lecturer in the UK; Charles Friedel (1832–1899), French chemist, developer of Friedel–Crafts reaction
An image from John Dalton's A New System of Chemical Philosophy, the first modern explanation of atomic theory.. This timeline of chemistry lists important works, discoveries, ideas, inventions, and experiments that significantly changed humanity's understanding of the modern science known as chemistry, defined as the scientific study of the composition of matter and of its interactions.
In 1874, a group of American chemists gathered at the Joseph Priestley House to mark the 100th anniversary of Priestley's discovery of oxygen.Although there was an American scientific society at that time (the American Association for the Advancement of Science, founded in 1848), the growth of chemistry in the U.S. prompted those assembled to consider founding a new society that would focus ...
19th-century American chemists (79 P) 20th-century American chemists (1 C, 993 P) 21st-century American chemists (1 C, 827 P)
Pages in category "20th-century American chemists" The following 200 pages are in this category, out of approximately 993 total. This list may not reflect recent changes .
The best description of benzene had been made by the German chemist Friedrich Kekulé. He had treated it as a rapid interconversion between two structures, each with alternating single and double bonds, but with the double bonds of one structure in the locations where the single bonds were in the other. Pauling showed that a proper description ...
Davy was born in Penzance, Cornwall, England on 17 December 1778, the eldest of the five children of Robert Davy, a woodcarver, and his wife Grace Millett. [1] According to his brother and fellow chemist John Davy, their hometown was characterised by "an almost unbounded credulity respecting the supernatural and monstrous ...
Joseph Crookes had had five children with his first wife; two sons from that marriage, Joseph and Alfred, took over the tailoring business, leaving William free to choose his own path. [7] In 1848, at age 16, Crookes entered the Royal College of Chemistry (now the Imperial College chemistry department) to study organic chemistry.