Uranium, which is strongly electropositive, reacts with water; it dissolves in acids but not in alkalies.
In general, ferromagnesian clay minerals are more soluble in acids than their aluminian counterparts.
He produced "inflammable air" (hydrogen) by dissolving metals in acids and "fixed air" (carbon dioxide) by dissolving alkalis in acids, and he collected these and other gases in bottles inverted over water or mercury.
In the massive state the metal is practically insoluble in acids and is not attacked even by aqua regia.
Many sea-creatures, though, make their shells and skeletons out of calcium carbonate or calcium phosphate materials that dissolve in acids.
They are readily bleached by light and by exposure to atmospheric oxygen and are also unstable in acids such as sulfuric acid.
Following the discovery that hydrochloric acid contained no oxygen, Sir Humphry Davy about 1815 first recognized that the key element in acids was hydrogen.
Indium is an amphoteric element; it dissolves in acids to give indium salts, and it also dissolves in concentrated alkalies to give indates.
The solubility of the clay minerals in acids varies with the nature of the acid and its concentration, the acid-to-clay ratio, the temperature, the duration of treatment, and the chemical composition of the clay mineral attacked.
Closely associated with niobium in ores and in properties, tantalum was discovered (1802) by the Swedish chemist Anders Gustaf Ekeberg and named after the mythological character Tantalus because of the tantalizing problem of dissolving the oxide in acids.
The positive identification of carbonate minerals is aided greatly by the fact that the carbon-oxygen bond of the CO3 group in carbonates becomes unstable and breaks down in the presence of hydrogen ions (H+) available in acids.
