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 …

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 · Alkalis are associated with a group of alkali metals and their compounds. These metals include hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium …

Alkalis are defined as the soluble hydroxides of alkali metals, which are characterized by their ability to neutralize acids. In chemistry, they are classified as bases that dissolve in water to …

Alkalis are best known for being bases (compounds with pH greater than 7) that dissolve in water. The adjective alkaline is commonly used in English as a synonym for base, especially for …

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

Alkalis are those bases that can dissolve in water, while those that cannot dissolve in water are not alkalis. This means that all bases are not alkaline, except those that can dissolve in water.

The word 'alkali' comes from the Arabic 'qali' meaning 'from the ashes' since ashes mixed with water used as cleaning products (such as soaps) are made of alkali materials. An alkali is …

Jul 1, 2025 · Potassium hydroxide (KOH) and Ammonium hydroxide (NH₄OH) are alkalis. Zinc oxide, magnesium oxide, and aluminum hydroxide are not alkalis as they are insoluble in water.