1. Citações
  2. Autores
  3. Jöns Jacob Berzelius

Frases de Jöns Jacob Berzelius

Jöns Jacob Berzelius, mais conhecido como Jacob Berzelius , foi um químico sueco.Foi um dos fundadores da química moderna, formulando alguns dos seus conceitos fundamentais. Estudou medicina na Universidade de Upsália e foi professor de medicina, farmácia e botânica no Instituto Karolinska de Estocolmo. Num período de dez anos estudou em torno de dois mil compostos químicos, descrevendo vários elementos químicos até então desconhecidos: o cério , o selénio e o tório . Entre muitos outros elementos, isolou pela primeira vez o silício , o zircónio e o titânio . Deve-se a Berzelius a estruturação da actual notação química e a introdução dos conceitos de isomeria, halogénios, ação catalítica e radical orgânico, o que faz dele, a par de John Dalton, Antoine Lavoisier e Robert Boyle, um dos fundadores da Química moderna. Wikipedia  

✵ 20. Agosto 1779 – 7. Agosto 1848
Jöns Jacob Berzelius photo
Jöns Jacob Berzelius: 6   citações 0   Curtidas

Jöns Jacob Berzelius: Frases em inglês

“Chemical signs ought to be letters, for the greater facility of writing, and not to disfigure a printed book … I shall take therefore for the chemical sign, the initial letter of the Latin name of each elementary substance: but as several have the same initial letter, I shall distinguish them in the following manner:— 1. In the class which I shall call metalloids, I shall employ the initial letter only, even when this letter is common to the metalloid and to some metal. 2. In the class of metals, I shall distinguish those that have the same initials with another metal, or a metalloid, by writing the first two letters of the word. 3. If the first two letters be common to two metals, I shall, in that case, add to the initial letter the first consonant which they have not in common: for example, S = sulphur, Si = silicium, St = stibium (antimony), Sn = stannum (tin), C = carbonicum, Co = colbaltum (colbalt), Cu = cuprum (copper), O = oxygen, Os = osmium, &c.”

Help us translate this quote
Jöns Jacob Berzelius

Jöns Jacob Berzelius, Essay on the Cause of Chemical Proportions, and on some circumstances relating to them: together with a short and easy method of expressing them', Annals of Philosophy, 1814, 3,51-2.

“In arranging the bodies in order of their electrical nature, there is formed an electro-chemical system which, in my opinion, is more fit than any other to give an idea of chemistry.”

Help us translate this quote
Jöns Jacob Berzelius

Jöns Jacob Berzelius, Essai sur le théorie des proportions chimiques (1819). Translated in Henry M. Leicester and Herbert S. Klickstein, A Source Book in Chemistry 1400-1900 (1952), 260.

“Every chemical combination is wholly and solely dependent on two opposing forces, positive and negative electricity, and every chemical compound must be composed of two parts combined by the agency of their electrochemical reaction, since there is no third force. Hence it follows that every compound body, whatever the number of its constituents, can be divided into two parts, one of which is positively and the other negatively electrical.”

Help us translate this quote
Jöns Jacob Berzelius

Jöns Jacob Berzelius Essai sur la théorie des proportions chemiques (1819), 98. Quoted by Henry M. Leicester in article on Bessel in Charles Coulston Gillespie (editor), Dictionary of Scientific Biography (1981), Vol. 2, 94.

“A tidy laboratory means a lazy chemist.”

Help us translate this quote
Jöns Jacob Berzelius

Jöns Jacob Berzelius to Nils Sefstrom, 8th July 1812. In C. G. Bernard, Berzelius as a European Traveller, in E. M. Melhardo and T. Frängsmyr (eds.), Enlightenment Science in the Romantic Era (1992), 225.

“As mineralogy constitutes a part of chemistry, it is clear that this arrangement [of minerals] must derive its principles from chemistry. The most perfect mode of arrangement would certainly be to allow bodies to follow each other according to the order of their electro-chemical properties, from the most electro-negative, oxygen, to the most electro-positive, potassium; and to place every compound body according to its most electro-positive ingredient.”

Help us translate this quote
Jöns Jacob Berzelius

Jöns Jacob Berzelius, An Attempt to Establish a Pure Scientific System of Mineralogy (1814), trans. J. Black, 48.

“The devil may write textbooks of chemistry, for every few years the whole thing changes.”

Help us translate this quote
Jöns Jacob Berzelius

Jöns Jakob Berzelius (1779–1848). Nature 162, 210 (1948) doi:10.1038/162210b0