experimental

Entrée : Calcium

URI: https://terra-vocabulary.org/ncl/DataTerraRepositoryFairIncubator/motsClefs/c_7ef85006

[Wikipedia] Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It is the fifth most abundant element in Earth's crust, and the third most abundant metal, after iron and aluminium. The most common calcium compound on Earth is calcium carbonate, found in limestone and the fossilised remnants of early sea life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium. The name derives from Latin calx "lime", which was obtained from heating limestone.

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est un feature of interest | Concept
modifié le 17 Nov 2023 08:31:48.550
soumis parHélène Bressan
accepté le 22 May 2023 15:22:46.216

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date accepted 22 May 2023 15:22:46.216
date submitted 22 May 2023 13:21:09.672
definition
entity Calcium
source graph graph

description [Wikipedia] Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It is the fifth most abundant element in Earth's crust, and the third most abundant metal, after iron and aluminium. The most common calcium compound on Earth is calcium carbonate, found in limestone and the fossilised remnants of early sea life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium. The name derives from Latin calx "lime", which was obtained from heating limestone.
item class feature of interest | Concept
label
fr Calcium
en Calcium
modified 17 Nov 2023 08:31:48.550
notation c_7ef85006
register mots clefs
status status experimental
submitter
account name h.bressan@brgm.fr
name Hélène Bressan

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Définition

alt label Ca
description [Wikipedia] Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It is the fifth most abundant element in Earth's crust, and the third most abundant metal, after iron and aluminium. The most common calcium compound on Earth is calcium carbonate, found in limestone and the fossilised remnants of early sea life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium. The name derives from Latin calx "lime", which was obtained from heating limestone.
exact match 1111 | c 7ef85006 | 20804
in scheme Vocabulaire des mots clefs
label
fr Calcium
en Calcium
pref label
fr Calcium
en Calcium
same as c 7ef85006 | 1111 | 20804
top concept of Vocabulaire des mots clefs
type feature of interest | Concept
was attributed to Pôle THEIA