Entrée : Nickel
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.
Métadonnées principales
| est un | Concept | feature of interest |
| modifié le | 17 Nov 2023 08:31:48.854 |
| soumis par | Hélène Bressan |
| accepté le | 22 May 2023 14:59:31.158 |
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| date accepted |
22 May 2023 14:59:31.158
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| date submitted |
22 May 2023 13:21:09.463
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| definition |
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| 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.
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feature of interest
| Concept
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| modified |
17 Nov 2023 08:31:48.854
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| notation |
c_4785417e
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| register |
mots clefs
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| status |
status experimental
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register item
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| 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.
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| exact match |
c 4785417e
| 20831
| 5589
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| in scheme |
Vocabulaire des mots clefs
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| same as |
5589
| 20831
| c 4785417e
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| top concept of |
Vocabulaire des mots clefs
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| type |
Concept
| feature of interest
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| was attributed to |
Pôle THEIA
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