chemical action


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Related to chemical action: chemical reaction
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Noun1.chemical action - (chemistry) any process determined by the atomic and molecular composition and structure of the substances involvedchemical action - (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
acylation - the process of introducing an acyl group into a compound
agglutinating activity, agglutination - the coalescing of small particles that are suspended in solution; these larger masses are then (usually) precipitated
amylolysis - conversion of starch to sugar
association - (chemistry) any process of combination (especially in solution) that depends on relatively weak chemical bonding
blueing, bluing - a process that makes something blue (or bluish)
calcification - a process that impregnates something with calcium (or calcium salts)
catalysis, contact action - acceleration of a chemical reaction induced the presence of material that is chemically unchanged at the end of the reaction; "of the top 50 commodity chemicals, 30 are created directly by catalysis and another 6 are made from raw materials that are catalytically produced"
chelation - the process of forming a ring by forming one or more hydrogen bonds
chemical reaction, reaction - (chemistry) a process in which one or more substances are changed into others; "there was a chemical reaction of the lime with the ground water"
chlorination - the addition or substitution of chlorine in organic compounds
cleavage - the breaking of a chemical bond in a molecule resulting in smaller molecules
corroding, corrosion, erosion - erosion by chemical action
cracking - the process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process)
deamination, deaminization - removal of the amino radical from an amino acid or other amino compound
decalcification - loss of calcium from bones or teeth
decarboxylation - the process of removing a carboxyl group from a chemical compound (usually replacing it with hydrogen)
de-iodination - the removal of iodine atoms from organic compounds
demineralisation, demineralization - the removal of minerals and mineral salts from a liquid (especially from water)
desalination, desalinisation, desalinization - the removal of salt (especially from sea water)
digestion - the process of decomposing organic matter (as in sewage) by bacteria or by chemical action or heat
dissociation - (chemistry) the temporary or reversible process in which a molecule or ion is broken down into smaller molecules or ions
gasification - the process of changing into gas; "coal gas is produced by the gasification of coal"
gassing - the process of interacting with gas
hydrogenation - a chemical process that adds hydrogen atoms to an unsaturated oil; "food producers use hydrogenation to keep fat from becoming rancid"
intumescence, intumescency, swelling - the increase in volume of certain substances when they are heated (often accompanied by release of water)
inversion - a chemical process in which the direction of optical rotation of a substance is reversed from dextrorotatory to levorotary or vice versa
iodination - the substitution or addition of iodine atoms in organic compounds
chemical mechanism, mechanism - the atomic process that occurs during a chemical reaction; "he determined unique mechanisms for the photochemical reactions"
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
nitrification - the chemical process in which a nitro group is added to an organic compound (or substituted for another group in an organic compound)
peptisation, peptization - the process of converting to a sol; bringing to a colloidal solution
photosynthesis - synthesis of compounds with the aid of radiant energy (especially in plants)
polymerisation, polymerization - a chemical process that combines several monomers to form a polymer or polymeric compound
precipitation - the process of forming a chemical precipitate
proteolysis - the hydrolysis of proteins into peptides and amino acids by cleavage of their peptide bonds
pyrochemical process, pyrochemistry - processes for chemical reactions at high temperatures
sequestration - the action of forming a chelate or other stable compound with an ion or atom or molecule so that it is no longer available for reactions
synaeresis, syneresis - the separation of liquid from a gel that is caused by contraction (as in cheese making)
synthesis - the process of producing a chemical compound (usually by the union of simpler chemical compounds)
References in classic literature ?
And where it came upon water some chemical action occurred, and the surface would be instantly covered with a powdery scum that sank slowly and made way for more.
Fancy a surgeon, with his nippers lifting tendons, muscles and such things into view, out of the complex machinery of a corpse, and observing, "Now this little nerve quivers--the vibration is imparted to this muscle--from here it is passed to this fibrous substance; here its ingredients are separated by the chemical action of the blood--one part goes to the heart and thrills it with what is popularly termed emotion, another part follows this nerve to the brain and communicates intelligence of a startling character--the third part glides along this passage and touches the spring connected with the fluid receptacles that lie in the rear of the eye.
A great deal of chemical action then commences, salts of various kinds effloresce on the surface, and the mass becomes hard.
Jay Inslee's legislation on chemicals management-SB 5406, An Act Relating to Using Chemical Action Plans to Require Safer Chemicals in Washington--was introduced in the state legislature.
Extraordinary Acoustic Raman (EAR) spectroscopy is an innovative method for characterizing such complex organic molecules as well as influencing their chemical action.
The chemical action during cleaning developes the dry lubricant and it is drawn into the pores of the material, creating a skin of protection.
Adding to these risks is the pervasiveness of polypharmacy today, in which multiple medications with the same chemical action are prescribed to the same patient.
The germ cannot adapt to (the surface), because (the product) is creating a physical action, not a chemical action," Richardson added.
In Gardner they develop multiple holes, an indication of chemical action on the copper.
Environmental Protection Agency (EPA) released Chemical Action Plans (CAPs) for the polyurethane raw materials methylene diphenyl diisocyanate (MDI) and toluene diisocyanate (TDI).
This chemical action helps prevent osteoarthritis, heart disease, and osteoporosis.
The dictionary calls poison "a substance that through its chemical action kills or injures an organism.
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