1. Scientific Foundations Of Hollow Glass Microspheres one.1 Composition and Microstructure one.one.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are largely composed of borosilicate glass, a fabric renowned for its reduced thermal growth coefficient and chemical inertness. The chemical make-up commonly incorporates silica (SiO₂, fifty-90%), alumina... https://socialcreditu.com/post/9646_elementary-substance-is-a-pure-chemical-substance-that-consists-of-atoms-belongi.html