From en.wikipedia.org:
[Residual substance, sometimes in the form of a fine powder] [date=September
2018] CALX is a substance formed from an ore or mineral that has been
heated.[1] Calx, especially of a metal, is now understood to be an oxide. The
term is also sometimes used in older texts on artists' techniques to mean
calcium oxide. [date=December 2017]
According to the obsolete phlogiston theory, the calx was the true elemental
substance that was left after phlogiston was driven out of it in the process
of combustion.[2]
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** Etymology
Calx is Latin for chalk or limestone, from the Greek χάλιξ (_khaliks_,
“pebble”). (It is not to be confused with the Latin homonym meaning heelbone
(or calcaneus in modern medical Latin), which has an entirely separate
derivation.)
** In popular culture
- UK electronic music artist Aphex Twin named four of his tracks after differently coloured calxes (green, yellow, blue and red).
** References
[Reflist]
Category:Inorganic chemistry
[inorganic-chem-stub]