chemical chain


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Noun1.chemical chain - (chemistry) a series of linked atoms (generally in an organic molecule)
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
closed chain, ring - (chemistry) a chain of atoms in a molecule that forms a closed loop
long chain, long-chain molecule - (chemistry) a relatively long chain of atoms in a molecule
open chain - a chain of atoms in a molecule whose ends are not joined to form a ring
building block, unit - a single undivided natural thing occurring in the composition of something else; "units of nucleic acids"
molecule - (physics and chemistry) the simplest structural unit of an element or compound
References in periodicals archive ?
The propellants used are highly oxidized and formulated to have a very low carbon composition in their chemical chain.
But when the substance in question is as harmless as a peanut, "the immune system sets off a chemical chain reaction, leading to allergy symptoms.
All four droplets in the left column are made of the same substance, a chemical chain of 16 carbon and 34 hydrogen atoms.
The comparison turned up differences in the activity of one inhibitor gene for a chemical chain reaction that had been previously implicated in stimulating neural stem cells.
Washington, November 28 ( ANI ): Researchers at the University of Montreal have identified and "switched off" a chemical chain that causes neurodegenerative diseases such as Huntington's disease, amyotrophic lateral sclerosis and dementia.
This deal supports the company's strategy to expand its Vinyl Acetate Chemical Chain Business.
Among the well-documented impacts of mining is acid rock drainage, a chemical chain reaction created when discarded rock and tailings are exposed to air and water.
At a mixing temperature of about 120[degrees]C, mechanical chain breaking ceases to be the predominant mechanism and chemical chain breaking by oxidative attack becomes more significant.
Having technology licences and production assets across much of the chemical chain, Dow's regional focus is not just on bulk chemicals.
These compounds, which form an essential link in the chemical chain reactions of life, are created by autotrophic organisms--plants--that gather carbon and energy from the environment, carbon from carbon dioxide, and energy from sunlight.
Investigators are tracking each step in the chemical chain that begins when a molecule makes contact with a receptor on a nerve cell membrane and ends with signals inside the cell directing specific genes in the cell's nucleus to turn on or turn off.