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Topic: Jons Jakob Berzelius


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In the News (Wed 25 Nov 09)

  
  Adventures in CyberSound: Berzelius, Baron Jons Jakob
Jons Jakob Berzelius, Swedish chemist who was a disciple of Dalton.
Berzelius developed the radical theory of chemical combination, which holds that reactions occur as stable groups of atoms called radicals are exchanged between molecules.
Berzelius did not believe in the Vitalism Theory, but instead in a regulative force which produced organization of tissues in an organism.
www.acmi.net.au /AIC/BERZELIUS_BIO.html   (294 words)

  
 Jons Jakob Berzelius
Jöns Jakob Berzelius (1779–1848) was one of Humphry Davy's contemporaries and rivals.
Berzelius was born into a well-educated Swedish family, but he experienced a difficult childhood because first his father and then his mother died.
Berzelius also applied his organizing abilities to mineralogy, where he classified minerals by their chemical composition rather than by their crystalline type, as had previously been done.
www.chemheritage.org /classroom/chemach/electrochem/berzelius.html   (494 words)

  
 Jöns Jacob Berzelius
In discovering that the atomic weights were also not integer multiples of hydrogen's, Berzelius also disproved Prout's hypothesis that elements were built up from atoms of hydrogen.
In order to aid his experiments, he developed a system of chemical notation in which the elements were given simple written labels -- such as O for oxygen, or Fe for iron -- and proportions were noted with numbers.
Berzelius - his life and work was written by J. Erik Jorpes and published in 1966 and 1970 (originally in Swedish, first published in 1949).
www.ebroadcast.com.au /lookup/encyclopedia/jo/Jons_Jakob_Berzelius.html   (296 words)

  
 Jöns Jacob Berzelius Biography | World of Chemistry
Jöns Jacob Berzelius, the son of a clergyman-schoolmaster, was born on Aug. 20, 1779, at Väversunda, Sweden.
Berzelius was the first to prove beyond a doubt the validity of Proust's law and having been impressed by Dalton's theory of atoms, he proceeded to determine atomic weights.
It has been said that when Berzelius condemned a new idea, it might just as well be forgotten, and that his insistence on the acceptance of his own ideas in part blocked the progress of chemistry.
www.bookrags.com /biography/jons-jacob-berzelius-woc   (1266 words)

  
 Berzelius, Jöns Jakob
Berzelius lost both his parents in his childhood but nevertheless received good secondary education in Linköping and was able to enrol in 1796 at the University of Uppsala to study medicine.
Berzelius was also a prolific writer whose Textbook of Chemistry ran through several editions and was translated into five languages.
Berzelius was undoubtedly the leading chemical authority in Europe during the first half of the 19th century.
www.euchems.org /Distinguished/19thCentury/berzelius.asp   (416 words)

  
 Berzelius   (Site not responding. Last check: 2007-10-30)
Jöns Jakob Berzelius was one of the founders of modern chemistry.
Jöns Jakob Berzelius was born into a well-educated Swedish family, but he experienced a difficult childhood because first his father and then his mother died.
Jöns Jakob Berzelius was one of Humphry Davy's contemporaries and rivals.
chem.ch.huji.ac.il /~eugeniik/history/berzelius.htm   (836 words)

  
 Jons Jakob Berzelius
Scienctist today owe a lot to Jons Jakob Berzelius (buhr-ZEE-lee-us).
Berzelius discovered the elements selenium, cerium, and thorium.
He was the first to identify the elements calcium and silicon.
www.tqnyc.org /NYC051293/jonsjakobberzelius.htm   (114 words)

  
 Berzelius, Jöns Jakob
Berzelius was born in Linköping, Sweden, in 1779.
Berzelius was so taken with experimental work, he bribed a caretaker in order to gain extra access to the university's laboratory.
In 1800 Berzelius was apprenticed to a physician at the Medivi mineral springs in Sweden.
www.chemistryexplained.com /Ar-Bo/Berzelius-J-ns-Jakob.html   (639 words)

  
 Jöns Jacob Berzelius Biography | Encyclopedia of World Biography
The numerous experiments on the effects of an electrical current on chemical solutions had caught the imagination of the scientific world quite early in the 19th century.
Of great importance to chemical knowledge in the 19th century were two concepts in theory, both of which are associated with Berzelius: isomerism and catalysis.
In his last years he was still denouncing some of his colleagues for what he termed their "Swedish laziness." He died on Aug. 7, 1848, and was buried in Stockholm.
www.bookrags.com /biography/jons-jacob-berzelius   (1282 words)

  
 JONS JACOB BERZELIUS
He began his medical studies at the age of seventeen but was forced to withdraw when his scholarship was withdrawn, not, however, before learning a good deal of chemistry from A. Eckberg, the discoverer of titanium.
He moved from the hierachal duality of acids and salts proposed by Stahl and Lavoisier to his own duality which saw substances composed of the generic and specific and eventually to one of compounds being made up of positive and negative portions.
Berzelius Charicature- donated by William Jensen, University of Cincinnati, and may be used for educational purposes only.
www.woodrow.org /teachers/chemistry/institutes/1992/Berzelius.html   (1007 words)

  
 Jons Jakob Berzelius (1779-1848), Swedish chemist
Berzelius, a Swedish chemist, was one of the dominant figures in chemistry during the first half of the 19th century.
1, 1808), Berzelius began the series of experiments establishing that the elements in inorganic substances are bound together in definite proportions by weight (the law of constant proportions).
Berzelius was also responsible for the classification of minerals by their chemical composition rather than by their crystalline type.
www.npg.org.uk /live/search/person.asp?LinkID=mp06190   (183 words)

  
 Biografias: Berzelius - QuiProcura
Jons Jakob Berzelius nasceu em 1779, em Linkoping, na Suécia.
Berzelius determinou a composição elementar exata de diversos compostos, assim como a massa de 43 elementos (com valores bem próximos dos atualmente aceitos).
Berzelius isolou diversos elementos, tais como: cálcio, bário, silício e zircônio e descobriu o selênio e o tório.
www.quiprocura.net /biografias/berzelius.htm   (136 words)

  
 Jons Jakob Berzelius   (Site not responding. Last check: 2007-10-30)
This was achieved in 1824 by Jons Jakob Berzelius, a Swedish chemist, with pure Zirconium first prepared in 1914.
Cubic Zirconia jewellery is seeing a huge to record highs and the huge influence of bling on today s fashion scene, Cubic Zirconia is probably the closest man made material to the looks, hardness and feel of real diamond.
However, although a naturally occurring element and metal, it is or how it s made so here s a brief summary for those interested Zirconium in its pure form and instead forms a part of several minerals, the most common being Zirconium Silicate which is mined heavily in the periodic table.
jewelry-diamonds.shoppingreviews.net /jons-jakob-berzelius.html   (253 words)

  
 AllRefer.com - Berzelius, JOns Jakob, Baron (Chemistry, Biography) - Encyclopedia
Silicon in the amorphous form was first prepared by Berzelius, and he was the first to isolate zirconium.
Berzelius coined the words isomerism, allotropy, and protein.
He also contributed to the science of electrochemistry and wrote numerous books.
reference.allrefer.com /encyclopedia/B/Berzeliu.html   (224 words)

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