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Entrée : Nickel - montrer la version 4

URI: https://terra-vocabulary.org/ncl/DataTerraRepositoryFairIncubator/motsClefs/c_4785417e

[Wikipedia] Nickel is a chemical element with the symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile. Pure nickel, powdered to maximize the reactive surface area, shows a significant chemical activity, but larger pieces are slow to react with air under standard conditions because an oxide layer forms on the surface and prevents further corrosion (passivation). Even so, pure native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger nickel–iron meteorites that were not exposed to oxygen when outside Earth's atmosphere.

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est un Concept | feature of interest
modifié le 17 Nov 2023 08:31:48.854
soumis parHélène Bressan
accepté le 22 May 2023 14:59:31.158

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date accepted 22 May 2023 14:59:31.158
date submitted 22 May 2023 13:21:09.463
definition
entity Nickel
source graph graph

description [Wikipedia] Nickel is a chemical element with the symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile. Pure nickel, powdered to maximize the reactive surface area, shows a significant chemical activity, but larger pieces are slow to react with air under standard conditions because an oxide layer forms on the surface and prevents further corrosion (passivation). Even so, pure native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger nickel–iron meteorites that were not exposed to oxygen when outside Earth's atmosphere.
item class feature of interest | Concept
label
fr Nickel
en Nickel
modified 17 Nov 2023 08:31:48.854
notation c_4785417e
register mots clefs
status status experimental
submitter
account name h.bressan@brgm.fr
name Hélène Bressan

type register item
version info 4
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Définition

description [Wikipedia] Nickel is a chemical element with the symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile. Pure nickel, powdered to maximize the reactive surface area, shows a significant chemical activity, but larger pieces are slow to react with air under standard conditions because an oxide layer forms on the surface and prevents further corrosion (passivation). Even so, pure native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger nickel–iron meteorites that were not exposed to oxygen when outside Earth's atmosphere.
exact match c 4785417e | 20831 | 5589
in scheme Vocabulaire des mots clefs
label
fr Nickel
en Nickel
pref label
fr Nickel
en Nickel
same as 5589 | 20831 | c 4785417e
top concept of Vocabulaire des mots clefs
type Concept | feature of interest
was attributed to Pôle THEIA