Search results for "History of chemistry" - New World Encyclopedia
From New World Encyclopedia
- Organic chemistry is the scientific study of the structures, properties ... Organic compounds are primarily composed of carbon and hydrogen, and ...8 KB (1,161 words) - 01:13, 18 November 2022
- Atmospheric chemistry involves study of the chemistry of the atmospheres ... Earth's atmosphere is composed of about 78 percent nitrogen, ...11 KB (1,481 words) - 06:25, 21 August 2023
- Silica gel is a granular, porous form of silica, produced synthetically ... fungicides, or pesticides), packets of silica gel usually bear warnings ...7 KB (1,044 words) - 22:03, 29 January 2023
- German chemist who ushered in the age of biochemistry by clarifying ... * Von Meyer, Ernst. [1906] 2007. A History of Chemistry. tr. George ...7 KB (1,041 words) - 23:02, 22 June 2023
- stable isotope is 262Lr, with a half-life of approximately four hours. It ... The origin of the name, preferred by the American Chemical Society ...6 KB (798 words) - 17:58, 25 October 2022
- * Partington, J. R. 1964. A History of Chemistry, vol. 4. New York: ... * Von Meyer, Ernst. 1906. A History of Chemistry, translated by George ...9 KB (1,376 words) - 06:04, 15 June 2023
- Food chemistry is the study of chemical processes and interactions ... ==Brief history of food chemistry== The history of food chemistry dates ...10 KB (1,507 words) - 06:16, 1 April 2024
- 250px|Experimental work in progress in a chemistry laboratory.]] ... chemistry, geochemistry, history of chemistry, materials science ...20 KB (2,886 words) - 14:48, 5 December 2023
- made the first comprehensive analysis of the principles, by which he ... analysis itself. Critical self-analysis of its own procedures, methodologies ...9 KB (1,192 words) - 22:57, 30 November 2022
- Surface science is the study of physical and chemical phenomena that ... addition, it is important for the production of semiconductor devices, fuel ...13 KB (1,826 words) - 23:53, 26 February 2023
- Thulium (chemical symbol Tm, atomic number 69) is the least abundant ... techniques have led to easier separation of the rare earths, which has ...9 KB (1,135 words) - 23:14, 30 April 2023
- than sugar, making it the least potent of the commercially available ... its aftertaste is generally less than that of saccharin or acesulfame potassium ...7 KB (974 words) - 06:52, 12 January 2024
- occurring chemical element. It is a member of the halogen family of elements ... The total amount of astatine in the Earth's crust has been estimated ...6 KB (808 words) - 05:08, 18 August 2023
- as radium and is therefore a valuable source of neutrons. Its isotope 225Ac ... milligram amounts by the neutron irradiation of 226Ra in a nuclear reactor ...7 KB (911 words) - 05:39, 15 June 2023
- Supramolecular chemistry refers to an area of chemistry that specializes ... contrast, researchers in supramolecular chemistry examine the weaker and ...20 KB (2,678 words) - 17:36, 23 October 2022
- Nd,Y)PO4, which contains up to 0.03 percent of terbium), xenotime (YPO4) and ... == History == Terbium was discovered in 1843 by Swedish chemist Carl ...9 KB (1,141 words) - 03:47, 30 April 2023
- Europium (chemical symbol Eu, atomic number 63) is the most reactive ... has also been identified in the spectra of the Sun and certain stars. ...10 KB (1,254 words) - 04:34, 23 March 2024
- Boyle's law (sometimes called the Boyle-Mariotte law) is one ... == Statement of Boyle's law == Boyle's law can be stated ...8 KB (1,241 words) - 14:53, 28 April 2020
- quot; that would lead to the development of nutrition as a science. His ... before earning a doctorate in organic chemistry at the University of Gottingen ...8 KB (1,193 words) - 20:03, 9 February 2023
- and thorium ores. Although many isotopes of this element have been produced ... == History == This element, which was named for France, was the last ...6 KB (795 words) - 04:56, 9 April 2024
- insoluble liquid with the typical smell of paint thinners, redolent of ... == History == The name toluene was derived from the older name toluol ...10 KB (1,406 words) - 03:55, 1 May 2023
- has several uses, particularly in the form of the isotope 241Am. For instance ... == History == Americium was first isolated by Glenn T. Seaborg, Leon ...9 KB (1,328 words) - 06:50, 25 July 2023
- with yttrium. It is the heaviest and hardest of the rare earth elements. ... other elements. Consequently, it is also one of the most expensive metals, ...11 KB (1,371 words) - 03:06, 5 November 2022
- == History == pure form until after the development of ion exchange and metallographic ...10 KB (1,193 words) - 17:27, 12 February 2024
- neutrons and was discovered in the debris of the first hydrogen bomb test ... == History == Einsteinium was named after Albert Einstein. It was first ...7 KB (940 words) - 00:06, 13 February 2024
- of the actinide series, mendelevium is synthesized by bombarding einsteinium ... == History == Mendelevium was named after Dmitri Mendeleev (surname ...6 KB (778 words) - 04:30, 9 November 2022
- It is of interest mainly for research purposes, and no practical applications ... Sikkeland in April 1958 at the University of California, Berkeley. The team ...7 KB (962 words) - 02:34, 16 November 2022
- Berkeley, California and the University of California, Berkeley. Berkelium ... and Kenneth Street, Jr., at the University of California, Berkeley in December ...7 KB (911 words) - 11:01, 28 September 2023
- In chemistry, isomers are molecules that share the same chemical formula ... == History == Isomerism was first noticed in 1827, when Friedrich Woehler ...14 KB (2,096 words) - 05:56, 11 March 2024
- 13, 1896) was a German organic chemist. One of the most prominent organic ... * Von Meyer, Ernst. 1906. A History of Chemistry, tr. George McGowan ...9 KB (1,392 words) - 18:28, 21 August 2023
- It is based on the explosive potential of nitroglycerin, with diatomaceous ... to promote peace and science for the benefit of mankind. ...6 KB (937 words) - 01:17, 16 January 2023
- A chemical element, often called simply element, is the class of atoms ... periodic table itself shows two main types of elements, metals and non-metals ...10 KB (1,624 words) - 14:39, 5 December 2023
- A bleach is a chemical that can remove or lighten the color of an ... is often a preliminary step in the process of dyeing. == History == ...7 KB (964 words) - 18:12, 31 October 2023
- of the actinide series, it is made by bombarding plutonium with neutrons ... == History == Fermium was named after nuclear physicist Enrico Fermi ...7 KB (998 words) - 17:26, 26 March 2024
- certain steels. Natural ytterbium is a mix of seven stable isotopes. ... have simplified separation. Known compounds of ytterbium are rare—they haven ...11 KB (1,375 words) - 21:33, 4 June 2023
- is a bright silvery metal that is a member of the lanthanide series of chemical ... monazite, bastnasite and samarskite. Of these, monazite (in which it ...11 KB (1,437 words) - 02:07, 23 December 2022
- is C10H16O. It is found in the bark and wood of the camphor laurel tree and ... == Etymology and history == The word camphor derives from the French ...11 KB (1,519 words) - 18:58, 25 November 2023
- The periodic table of the chemical elements is a tabular display of ... == History == :Main article: History of the periodic table ...13 KB (1,942 words) - 00:40, 24 November 2022
- nature, it is found in the stings and bites of many insects of the order Hymenoptera ... == History and etymology == As early as the fifteenth century, some ...13 KB (1,811 words) - 06:35, 1 April 2024
- 61) is a metallic element that is a member of the lanthanide series of chemical ... Promethium can be formed as a product of uranium fission. Only trace ...11 KB (1,429 words) - 23:55, 1 December 2022
- century have greatly brought down the cost of production of all rare-earth ... == History == Erbium (for Ytterby, a town in Sweden) was discovered ...11 KB (1,419 words) - 19:19, 13 February 2024
- A complex in chemistry usually is used to describe molecules or ensembles ... understood in any sense, since the beginning of chemistry. Examples include ...21 KB (3,125 words) - 00:21, 8 January 2024
- smell. It is the most common member of a class of chemical compounds ... , although there is no contemporary evidence of this. It was first synthesized ...13 KB (1,801 words) - 14:33, 29 January 2024
- chemist who contributed to the development of spectroscopy as a powerful ... * Von Meyer, Ernst. 1906. A History of Chemistry, tr. George McGowan ...8 KB (1,189 words) - 20:25, 11 August 2022
- a silvery metallic element that is a member of the lanthanide series of chemical ... It constitutes about 38 parts per million (ppm) of the Earth’s crust. ...12 KB (1,578 words) - 16:18, 11 November 2022
- Protactinium (chemical symbol Pa, atomic number 91) is a member of ... The isotope protactinium-231 occurs in pitchblende to the extent of ...9 KB (1,150 words) - 08:16, 2 December 2022
- :For other meanings of the abbreviation Pr, see PR. number=59 | symbol ... silvery metallic element that is a member of the lanthanide series of chemical ...12 KB (1,535 words) - 22:14, 30 November 2022
- with other rare earth elements, it is one of the most reactive of the rare ... Lanthanum, its alloys, and its compounds have a wide range of applications ...11 KB (1,398 words) - 22:23, 22 October 2022
- and zirconium have nearly identical chemistry, which makes the two difficult ... == History == Hafnium (Latin Hafnia for "Copenhagen," the ...10 KB (1,277 words) - 16:40, 21 January 2024
- concentrations above 5.6 percent. A solution of hydrogen cyanide in water is ... used by the Nazi regime for the mass murder of Jews in the gas chambers of ...12 KB (1,685 words) - 13:19, 4 February 2023
