…a substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals; typically, a corrosive or sour-tasting liquid of this kind…
…denoting bacteria that cannot be decolorized by an acid after staining, which is characteristic of the mycobacteria that cause tuberculosis and leprosy…
…a kind of popular dance music incorporating elements of jazz, funk, soul, and hip hop…
…rainfall made so acidic by atmospheric pollution that it causes environmental harm, chiefly to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain sulphur and nitrogen oxides which combine with atmospheric water to form acids…
…a style of rock music popular chiefly in the late 1960s, associated with or inspired by hallucinogenic drugs…
…a salt formed by incomplete replacement of the hydrogen of an acid, e.g. potassium hydrogen sulphate (KHSO4)…
…a compound whose molecule contains both a carboxyl group (COOH) and a ketone group (CO)…
…denoting a secondary cell or battery in which the electrodes are plates or grids of lead (or lead alloy) immersed in dilute sulphuric acid. The anode is coated with lead dioxide and the cathode with spongy lead…
…an almost insoluble compound which is a breakdown product of nitrogenous metabolism. It is the main excretory product in birds, reptiles, and insects…
…the acid that gives vinegar its characteristic taste. The pure acid is a colourless viscous liquid or glassy solid…
…a kind of popular synthesized dance music with a fast repetitive beat, popular in the 1980s and associated with the taking of drugs such as Ecstasy…
…a crystalline fatty acid obtained from natural fats and used especially in the manufacture of nylon…
…a simple organic compound containing both a carboxyl (COOH) and an amino (NH2) group…
…a weakly acid crystalline compound derived from borax, used as a mild antiseptic and in the manufacture of heat-resistant glass and enamels…
…a compound produced by oxidation of cholesterol. It is a steroidal fatty acid and its salts are present in bile…
…a sharp-tasting crystalline acid present in the juice of lemons and other sour fruits. It is made commercially by the fermentation of sugar and used as a flavouring and setting agent…
…a carboxylic acid consisting of a hydrocarbon chain and a terminal carboxyl group, especially any of those occurring as esters in fats and oils…
…a vitamin of the B complex found especially in leafy green vegetables, liver, and kidney…
…a colourless irritant volatile acid made catalytically from carbon monoxide and steam. It is present in the fluid emitted by some ants…
…a highly soluble organic phenol found in humus that chelates elemental mineral nutrients…
…an acid extracted from oak galls and other vegetable products, formerly used in making ink…
…a crystalline acid with strong oxidizing properties, made by oxidation of iodine…
…an organic acid extracted from a red alga, used to kill intestinal worms…
…a colourless syrupy organic acid formed in sour milk, and produced in the muscle tissues during strenuous exercise…
…a compound or ionic species which can accept an electron pair from a donor compound…
…a crystalline acid made by distilling malic acid, used in making synthetic resins…
…a colourless or pale yellow corrosive poisonous liquid acid with strong oxidizing properties, made in the laboratory by distilling nitrates with sulphuric acid…
…a poisonous crystalline acid with a sour taste, present in rhubarb leaves, wood sorrel, and other plants…
…a bitter yellow compound obtained by nitrating phenol, used as a dye and in the manufacture of explosives…
…an acid present in cinchona bark and other plant products, used in the synthesis of pharmaceuticals…
…a substance present in saliva which consists of acyl derivatives of neuraminic acid…
…any of a class of compounds which are derived from sugars by oxidizing a CH2OH group to an acid group (COOH)…
…a yellow crystalline compound which is present in many lichens and is used as an antibiotic…
…a plant hormone which promotes leaf detachment, induces seed and bud dormancy, and inhibits germination…
…a radical formed by the removal of hydrogen ions from an acid…
…a pungent liquid organic acid which can be polymerized to make synthetic resins…
…a compound consisting of an adenosine molecule bonded to one acidic phosphate group, present in most DNA and RNA. It typically exists in a cyclic form with the phosphate bonded to the nucleoside at two points…
…an insoluble gelatinous carbohydrate found (chiefly as salts) in many brown seaweeds. The sodium salt is used as a thickener in foods and many other materials…
