Search results
Results from the WOW.Com Content Network
The discoveries of the 118 chemical elements known to exist as of 2025 are presented here in chronological order. The elements are listed generally in the order in which each was first defined as the pure element, as the exact date of discovery of most elements cannot be accurately determined.
The scientific approach to food and nutrition arose with attention to agricultural chemistry in the works of J. G. Wallerius, Humphry Davy, and others.For example, Davy published Elements of Agricultural Chemistry, in a Course of Lectures for the Board of Agriculture (1813) in the United Kingdom which would serve as a foundation for the profession worldwide, going into a fifth edition.
Cannizzaro's chemical interests had originally centered on natural products and on reactions of aromatic compounds; in 1853 he discovered that when benzaldehyde is treated with concentrated base, both benzoic acid and benzyl alcohol are produced—a phenomenon known today as the Cannizzaro reaction. In his 1858 pamphlet, Cannizzaro showed that ...
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.
Lars Fredrik Nilson (27 May 1840 – 14 May 1899) was a Swedish chemist, professor at Uppsala University, and later Director of the Agricultural Chemical Experiment Station at the Royal Swedish Academy of Agriculture and Forestry in Stockholm. He discovered the element scandium in 1879, by separating out scandium(III) oxide, also known as scandia.
Retrieved from "https://en.wikipedia.org/w/index.php?title=List_of_chemical_elements_by_their_discovery&oldid=1197095808"
Brand kept his discovery secret, as alchemists of the time did, and worked with the phosphorus trying unsuccessfully to use it to produce gold. His recipe was: [5] Let urine stand for days until it gives off a pungent smell. [4] (This step was not necessary, as later scientists discovered that fresh urine yielded the same amount of phosphorus). [6]
Auer von Welsbach's country house (Schloss Welsbach) in Mölbling, AustriaCarl Auer von Welsbach (1 September 1858 – 4 August 1929), [3] who received the Austrian noble title of Freiherr Auer von Welsbach in 1901, [4] [5] was an Austrian scientist and inventor, who separated didymium into the elements neodymium and praseodymium in 1885.