"tea" also refers to the aromatic beverage prepared from the cured leaves by combination with hot or boiling water, and is the common name for the camellia sinensis plant itself. after water, tea is the most widely consumed beverage in the world. it has a cooling, slightly bitter, astringent flavour...
on the conditions of polymerization. initial acidification of a water-glass (sodium silicate) solution yields si(oh) . colloidal silicas are suspensions of fine amorphous, nonporous, and generally spherical silicon dioxide particles in an exceedingly liquid phase.colloidal silicas are most often prepared...