Alkali - Wikipedia
WebIn chemistry, an alkali ( / ˈælkəlaɪ /; from Arabic: القلوي, romanized : al-qaly, lit. 'ashes of the saltwort ') is a basic, ionic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0.
Alkali | Chemical Compound, Properties & Uses | Britannica
WebFeb 27, 2024 · 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 react with acids to yield neutral salts; and they are caustic and in concentrated form are corrosive to organic.
Alkali Definition & Meaning - Merriam-Webster
WebThe 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 an alkali metal) having marked basic …
Alkali metal | Definition, Properties, & Facts | Britannica
WebApr 18, 2024 · alkali metal, any of the six chemical elements that make up Group 1 (Ia) of the periodic table —namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids ).
Alkali Metals: Elements in the First Column of the Periodic Table
WebAug 29, 2023 · The alkali metals are a group of elements in the periodic table with similar properties: They are all shiny, silvery-white, highly reactive metals. The alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs) and francium (Fr).
20.4: The Alkali Metals (Group 1) - Chemistry LibreTexts
WebThe alkali metals are potent reductants whose chemistry is largely that of ionic compounds containing the M + ion. Alkali metals have only a weak tendency to form complexes with simple Lewis bases. The first alkali metals to be isolated (Na and K) were obtained by passing an electric current through molten potassium and sodium carbonates.
Characteristics of alkali metals | Britannica
Webalkali, Inorganic compound, any soluble hydroxide (―OH) of the alkali metals: lithium, sodium, potassium, rubidium, and cesium. More broadly, ammonium hydroxide ( see ammonia ) and soluble hydroxides of the alkaline earth metals are also called alkalies.
12.2: Group IA - Alkali Metals - Chemistry LibreTexts
WebJul 18, 2023 · Li, Na, K, Rb, and Cs are all group IA elements, also known as the alkali metals. The seventh member of the group, francium (Fr) is radioactive and so rare that only 20 atoms of Fr may exist on Earth at any given moment [1]. The term alkali is derived from an Arabic word meaning “ashes.” Compounds of potassium as well as other alkali metals ...
Acids and Alkalis - BBC Bitesize
WebAcid + alkali → salt + water. We say that the acid and alkali are the reactants, and the salt and water are the products of a neutralisation reaction. In chemistry a salt is any compound formed...
ALKALI Definition & Meaning | Dictionary.com
WebAlkali definition: 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.. See examples of ALKALI used in a sentence.
- Some results have been removed
Skip to content