When heated to redness in the air it becomes converted into silicon dioxide and free selenium.
With his Sco drill he might have pierced that silicon dioxide armor till he reached the creature's gritty flesh.
We're carbon, and our waste is carbon dioxide, and this thing is silicon, and its waste is silicon dioxide—silica.
In this respect it differs from silicon dioxide, which will not combine directly with water.
"hard silicon dioxide," 1801, Modern Latin, from Latin silex (genitive silicis) "flint, pebble," on model of alumina, soda.
silicon dioxide n.
silica sil·i·ca (sĭl'ĭ-kə)
A crystalline compound occurring abundantly as quartz, sand, and many other minerals and used to manufacture a variety of materials, especially glass and concrete.
|silicon dioxide |
A chemical compound that is the main constituent of most of the Earth's rocks. Silica occurs naturally in five crystalline forms (quartz, tridymite, cristobalite, coesite, and stishovite), in a cryptocrystalline form (chalcedony), and in an amorphous form (opal). It is also the main chemical compound in sand. Silica is used to make glass, concrete, and other materials. Also called silicon dioxide. Chemical formula: SiO2.