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OXYGEN [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-03-30

English

Subject field(s)
  • Chemistry
Universal entry(ies)
O
symbol
DEF

A colorless, odorless gas at NTP, which makes up 20.99% by volume of the air in the atmosphere, represented by O as an element and O2 as a gas molecule. It is an element with atomic number 8, the common isotope has an atomic mass number 16.

CONT

Oxygen is essential for the life of most organisms on earth; is needed for decomposition of refuse; and is an essential element in combustion.

French

Domaine(s)
  • Chimie
Entrée(s) universelle(s)
O
symbol
DEF

Corps gazeux diatomique (O2), constituant le cinquième de l'atmosphère terrestre et nécessaire à la respiration. (Elément chimique de symbole O) [...] Numéro chimique 8. Masse atomique 15,9994.

Spanish

Campo(s) temático(s)
  • Química
Entrada(s) universal(es)
O
symbol
OBS

Elemento gaseoso de número atómico 8. Grupo VIA del Sistema Periódico. Valencia + 2. Incoloro e insípido. Es incombustible pero soporta activamente la combustion. Riesgo de incendio.

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