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Death notices for chemists suggest perhaps not, despite the hazards found in many labs. Chemistry, covered. Science news, research, reviews, features and opinions. Read Chemistry World to keep up with stories from across the chemical sciences.
The complex chemistry of making paper
2023年4月4日 · Making paper. At a chemical level, paper is made of cellulose fibres pressed and bound together by hydrogen bonds, but it’s the crucial pulping step that accounts for paper’s unusual strength. As the wood is beaten into a pulp, the individual cellulose fibres separate and form a suspension within the water. A complex network of hydrogen ...
Explainer: The science of alkyl nitrites aka poppers
2021年9月16日 · Inhaling alkyl nitrites feels like becoming instantly drunk according to some users, although the effect lasts for only a few minutes. Also known as poppers, these chemicals have been taken recreationally since the 1960s. Although they are sold openly, usually in small brown bottles with enticing brand names such as ‘liquid gold’, their ...
Why are there 20 amino acids? | Feature | Chemistry World
2018年9月17日 · But the selection of the 20 amino acids used in biology is clearly linked to the development of proteins. By polymerising amino acids in long polypeptide chains, proteins could fold into soluble structures with close-packed cores and ordered binding pockets. The arrival of proteins and the eventual adoption of the standard 20 amino acids was ...
Explainer: The chemistry of farts | News | Chemistry World
2016年12月21日 · The men farted between two and 53 times a day, with an average of 12.7, while women farted between once and 32 times a day, with an average of 7.1 times. The number of farts was higher when people ate more fibre. The study shows farting is normal, Stanton says. ‘I hope that has translated to people being prepared to eat more foods high in ...
History of noble gases | Feature | Chemistry World
2016年9月9日 · The system started in 1735 and by 1976, to keep the growing number of many thousands in check, the Academy adopted a procedure by which plis cachetés are opened if they have remained sealed for 100 years or more. The work is described in a single page in French, in Ramsay’s handwriting.
Explainer: Why is mixing cleaning chemicals such a bad idea?
2020年4月23日 · Chlorine gas is toxic, forms acids on contact with wet surfaces, such as home plumbing but also living tissue, such as the lungs. Heating or contact with metals can also cause bleach to decompose via a different route. 2NaOCl → O 2 + 2NaCl. Mixing hypochlorite with ammonia would see the breakdown of the hypochlorite to generate hypochlorous ...
Not just batteries: The chemistry of electric cars
2022年4月24日 · The internal combustion engine is not dead, but it may be beginning to die. One of the few bold steps taken at the November 2021 Cop26 climate conference in Glasgow, UK, was a declaration on phasing out sales of petrol and diesel cars by 2040 in all markets and by 2035 in leading ones: many European countries have set earlier dates, with the UK opting for …
Chemistry research news, scientific research from across the …
Microcrystal electron diffraction promises a revolution in study of proteins, small molecules. Failings in response to East Palestine train derailment compounded human and environmental impact. New spectroscopy method maps out water’s hydrogen-bonded network. Banned pigments found in tattoo inks sold in the EU.
TNT | Podcast - Chemistry World
Simon Cotton. When a compound is best known by an acronym, that usually means bad news. Just think of DDT, the insecticide, or GHB, which is best known as a 'date rape' drug. And then there is TNT, whose chemical name is 2,4,6-trinitrotoluene. TNT was first made in 1863 by a German chemist, Joseph Wilbrand. He was trying to make a dyestuff, and ...