1. Scientific Foundations Of Hollow Glass Microspheres one.one Composition and Microstructure 1.one.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are generally composed of borosilicate glass, a cloth renowned for its reduced thermal enlargement coefficient and chemical inertness. The chemical make-up commonly involves silica (SiO₂, fifty-90%), alumi... https://www.dostally.com/post/345006_elementary-substance-is-a-pure-chemical-substance-that-consists-of-atoms-belongi.html