Glass is mainly an inorganic non-metallic material, with silicon dioxide being the core component.
Main components: Ordinary glass is composed of silicon dioxide, sodium oxide, and calcium oxide. The raw materials commonly used are quartz sand, soda ash, and limestone.
Common types: Daily windows and bottles are mostly sodium calcium glass; heat-resistant containers often use borosilicate glass; mobile phone covers usually use aluminum silicate glass.
Basic characteristics: Transparent, chemically stable, without a fixed melting point, and can gradually soften and form when heated.
