Here is a brief look at how precipitated silica is made: Step 1: Precipitation. Sodium silicate solution (water glass) and mineral acid are reacted in an agitated vessel to produce a slurry of amorphous silica particles.
An intensive property is a physical quantity whose value does not depend on the amount of the substance for which it is measured. For example, the temperature of a system in thermal equilibrium is the same as the temperature of any part of it.
Learner's definition of EXTENSIVE. [more extensive; most extensive] : large in size or amount : very full or complete. an extensive [=comprehensive] reading list. He's had extensive [=considerable] training in this area. The storm caused extensive damage. extensive repairs. an extensive series of tests.