noun
alkali metal
Chemistry term for Group 1 elements (Li, Na, K, etc.). Used in scientific and educational contexts.
リチウムはアルカリ金属の一種です。
Lithium is a type of alkali metal.
アルカリ金属は水と激しく反応する。
Alkali metals react violently with water.
Refers to Group 2 elements (alkaline earth metals), not Group 1.
From English 'alkali' + 金属 (metal). 'Alkali' ultimately derives from Arabic al-qaly 'the ashes of saltwort'.