Assertion: metal's oxide | /r/HasProperty | white solids
Facets:
value: commonly
type: DEGREE
value: with high melting points
type: OTHER
Source sentences:
text: The oxides TiO 2 , ZrO 2 and HfO 2 are white solids with high melting points and unreactive against most acids.
text: Arsenious oxide, commonly known as white arsenic, is obtained as a by-product from the roasting of the ores of copper, lead, and certain other metals as well as by the roasting of arsenopyrite and arsenic sulfide ores.
text: e.g. sodium chloride NaCl or Na+Cl– These oxides and halides ionic compounds are colourless crystals or white solids, soluble in water to give colourless solutions (usually pH 7 for their salts, pH 13–14 for the oxides because the MOH alkali formed).