any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium, and francium, whose hydroxides are alkalis.
Write the general formula of an alum, representing an atom of an alkali metal by X and an atom of a trivalent metal by Y.
An Elementary Study of Chemistry William McPherson
Barium nitrate, used with a neutral solution, is the group reagent in the absence of metal ions other than the alkali metal ions.
The Elements of Qualitative Chemical Analysis, vol. 1, parts 1 and 2. Julius Stieglitz
any of the monovalent metals lithium, sodium, potassium, rubidium, caesium, and francium, belonging to group 1A of the periodic table. They are all very reactive and electropositive
alkali metal n.
Any of a group of soft, white, low-density, low-melting, highly reactive metallic elements, including lithium, sodium, potassium, rubidium, cesium, and francium.
Any of a group of soft metallic elements that form alkali solutions when they combine with water. They include lithium, sodium, potassium, rubidium, cesium, and francium. Except for cesium, which has a gold sheen, alkali metals are white. The alkali metals have one electron in their outer shell, and therefore react easily with other elements and are found in nature only in compounds. See Periodic Table.
an instrument for determining the quantity of carbon dioxide. Historical Examples It will at once be seen that every alkalimeter division of the first of the above acids, and every 10 gr. Cooley’s Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades…, Sixth Edition, Volume I Arnold Cooley noun an […]
- Alkali reserve
alkali reserve alkali reserve n. The sum total of the basic ions of the blood and other body fluids that act as buffers and maintain the normal pH of the blood.
- Alkali rock
any igneous rock with a marked preponderance of alkali and a low percentage of silica.
- Alkali soil
soil that has either a high degree of alkalinity or a high percentage of sodium, or both, so that most crops cannot be grown in it profitably. noun a soil that gives a pH reaction of 8.5 or above, found esp in dry areas where the soluble salts, esp of sodium, have not been leached […]