Ad
related to: man made substances
Search results
Results from the WOW.Com Content Network
A synthetic element is one of 24 known chemical elements that do not occur naturally on Earth: they have been created by human manipulation of fundamental particles in a nuclear reactor, a particle accelerator, or the explosion of an atomic bomb; thus, they are called "synthetic", "artificial", or "man-made".
A synthetic substance or synthetic compound refers to a substance that is man-made by synthesis, rather than being produced by nature. It also refers to a substance or compound formed under human control by any chemical reaction, either by chemical synthesis (chemosyntesis) or by biosynthesis.
Artificial polymer: Man-made polymer that is not a biopolymer. Note 1: Artificial polymer should also be used in the case of chemically modified biopolymers. Note 2: Biochemists are now capable of synthesizing copies of biopolymers that should be named Synthetic biopolymer to make a distinction with true biopolymers.
This is seen by looking at how long the indentation is along a certain direction (related to the indentations made with a Vickers hardness test). Along with the alignment of the atoms, this is also due to the short covalent B-B (1.80 Å) bonds in the <100> direction, which are absent in the <001> direction (B-B = 4.10 Å).
Image credits: Sasha Weilbaker #3 Wetsuits. Unlike whales, beavers don’t have layers of blubber to keep them warm when they dive into chilly water. Instead, their thick fur traps air among the ...
Per- and polyfluoroalkyl substances are a group of synthetic organofluorine chemical compounds that have multiple fluorine atoms attached to an alkyl chain. Different organizations use different definitions for PFAS, leading to estimates of between 8,000 and 7 million chemicals within the group.
PFAS, dubbed "forever chemicals" for their longevity, are a group of about 15,000 man-made substances. They have been known to cause various forms of cancer, birth defects, liver and kidney damage ...
Perfluorooctanesulfonic acid (PFOS) (conjugate base perfluorooctanesulfonate) is a chemical compound having an eight-carbon fluorocarbon chain and a sulfonic acid functional group, and thus it is a perfluorosulfonic acid and a perfluoroalkyl substance (PFAS). It is an anthropogenic (man-made) fluorosurfactant, now regarded as a global pollutant.
Ad
related to: man made substances