Glass worktops are usually made of toughened glass, which is stronger than ordinary glass. However, toughened glass is not indestructible and can be damaged or broken under certain conditions. In general, glass is sensitive to impact, so avoid hard knocks or scratches.
Caring for square glass countertops is pretty easy. You can wipe the surface with a damp cloth and a mild cleaning solution, and then wipe it with a clean, dry cloth. It's important to avoid using abrasive cleaners, which could scratch the surface.