In chemistry, an alkali (/ ˈælkəlaɪ / ⓘ; from the Arabic word al-qāly, القالِي) is a basic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water.

Alkali, any of the soluble hydroxides of the alkali metals—i.e., lithium, sodium, potassium, rubidium, and cesium. Alkalies are strong bases that turn litmus paper from red to blue; they …

The meaning of ALKALI is a soluble salt obtained from the ashes of plants and consisting largely of potassium or sodium carbonate; broadly : a substance (such as a hydroxide or carbonate of …

Jan 1, 2025 · Learn what an alkali in chemistry is, its special properties, common examples, and the differences between an alkali and an acid.

ALKALI meaning: 1. a substance that has the opposite effect or chemical behaviour to an acid 2. a substance that…. Learn more.

An alkali is a substance with a pH value of more than 7. Alkalis form chemical salts when they are combined with acids. Collins COBUILD Advanced Learner’s Dictionary. Copyright © …

any of various bases, the hydroxides of the alkali metals and of ammonium, that neutralize acids to form salts and turn red litmus paper blue. any of various other more or less active bases, as …

In chemistry, an alkali (from Arabic: Al-Qaly القلي, القالي ) is a basic, ionic salt of an alkali metal or alkaline earth metal element. Alkalis are best known for being bases (compounds with pH …

Define alkali. alkali synonyms, alkali pronunciation, alkali translation, English dictionary definition of alkali. n. pl. al·ka·lis or al·ka·lies 1. A carbonate or hydroxide of an alkali metal, the aqueous …

Sea surface alkalinity (from the GLODAP climatology). Alkalinity (from Arabic: القلوية, romanized: al-qaly, lit. 'ashes of the saltwort ') [1] is the capacity of water to resist acidification. [2] It should …