| The metallic oxide combines with this excess of acid anhydride, forming a mixed salt of metaboric acid. |
| In what respects does aluminium oxide differ from calcium oxide in properties? |
| It is composed of silica, alumina, carbonate of lime, magnesia and oxide of iron. |
| By spontaneous evaporation the ammoniacal solution deposits small, colourless crystals of cystic oxide. |
| It is virtually a compound of the two oxides, aluminum oxide and magnesium oxide. |
| They are exceedingly useful in assaying, as they resist the action of fused oxide of lead much better than most clay crucibles. |
