Copper forms two oxides, the suboxide and the protoxide; the suboxide colours glass red, while the protoxide renders it green.
The Assyrians used also opaque glass, which they colored, sometimes red, with the suboxide of copper, sometimes white, sometimes of other hues.
It is uncertain whence the coloring matter was derived; perhaps the substance used was the suboxide of copper, with which the Assyrians are known to have colored their red glass.
If the sugar be abundant, a thick yellow opacity or deposit of yellow suboxide are produced (and this changes to a brick-red at once if the blue colour of the test remains dominant).
If sugar is present, the suboxide is reduced, and metallic bismuth being liberated is precipitated as a black powder.
The suboxide of a grayish blue colour, which forms a kind of crust upon a plate of lead long exposed to the air.
If there is much sugar, the first drop will throw down a yellow precipitate of suboxide of copper, which becomes rapidly red.
It is well known that in the fining of copper by oxidation there is left in the fined metal the suboxide of copper, which must then be removed by the refining process, using carbon to reduce the copper to its metallic state.
This color was quite superficial, and the glass itself was opaque and of a vermilion tint, attributed to suboxide of copper.
This specimen is interesting, as showing the early use and knowledge of suboxide of copper as a stain or coloring agent for glass.
The outer green covering was due to the action of the atmosphere on the surface of the glass, and the consequent change of the suboxide into green carbonate of copper.
The grey colour peculiar to the suboxide and oxide perhaps shows that they contain metallic sodium.
According to certain evidence, a suboxide is formed when thin sheets or fine drops of sodium slowly oxidise in moist air.
The suboxide is a grey inflammable substance which easily decomposes water, disengaging hydrogen; it is formed by the slow oxidation of sodium at the ordinary temperature.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "suboxide" in a variety of sentences. We hope that you will now be able to make sentences using this word.
