Assertion: cesium | /r/HasProperty | pyrophoric
Facets:
Source sentences:
text: Cesium is "extremely pyrophoric, ignites spontaneously when in contact with air, and explodes violently in water or ice at any temperature above -116 ° C".
text: Cesium is "extremely pyrophoric, ignites spontaneously when in contact with air, and explodes violently in water or ice at any temperature above -116 ° C".