Assertion: beryllium | /r/CapableOf | react with oxygen
Facets:
value: at room temperature
type: OTHER
Source sentences:
text: When beryllium reacts with oxygen or water, a very thin layer of beryllium oxide forms on the surface.
text: Beryllium is a very reactive metal, which has a great affinity with oxygen and can react with oxygen at room temperature to produce a thin, protective oxide film on its surface.