One. Scientific Foundations of Hollow Glass Microspheres 1.one Composition and Microstructure 1.1.1 Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are primarily composed of borosilicate glass, a cloth renowned for its small thermal growth coefficient and chemical inertness. The chemical make-up normally involves silica (SiO₂, fifty-ninety%), alumina (Al₂... https://youslade.com/post/348649_elementary-substance-is-a-pure-chemical-substance-that-consists-of-atoms-belongi.html