1. Scientific Foundations Of Hollow Glass Microspheres one.one Composition and Microstructure 1.one.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are principally composed of borosilicate glass, a fabric renowned for its reduced thermal enlargement coefficient and chemical inertness. The chemical makeup generally contains silica (SiO₂, fifty-ninety%)... https://www.jointcorners.com/post/483681_elementary-substance-is-a-pure-chemical-substance-that-consists-of-atoms-belongi.html