2006-09-20 20:04:54 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Glass is made from sand using very high heat.........
2006-09-20 20:15:31 · answer #1 · answered by A S R 2 · 0⤊ 0⤋
Depends which glass you mean .
The glass in the windows in your home is almost certainly soda-lime silicate glass which is 70% silica sand, 13 % Lime (as Calcium Carbonate)and 12% Soda (as Sodium Carbonate) and 5% other impurities.
The glass in the fluorescent tube lights in your home or office is more than 99.9% pure Quartz.
In some glasses Boron replaces a lot of the silica to make boro-silicate glasses which are more tolerant to being heated. The most well known is sold as Pyrex.
2006-09-21 16:57:38 · answer #2 · answered by black sheep 2 · 1⤊ 0⤋
silica. Melted together with glass itself.
Which is why glass can be recycled.
2006-09-21 05:00:34 · answer #3 · answered by marionette_presto 3 · 0⤊ 0⤋
Silicon.Sand,dolomite,soda (sodium carbonate),lime,barium cerium
2006-09-21 03:18:55 · answer #4 · answered by Call me crazy 2 · 0⤊ 0⤋
sand
2006-09-21 03:07:32 · answer #5 · answered by mlamb56 4 · 1⤊ 0⤋
silica
2006-09-21 03:14:54 · answer #6 · answered by gerald w 2 · 0⤊ 0⤋
silica (sand)
2006-09-21 03:07:02 · answer #7 · answered by rick_caber 1 · 2⤊ 0⤋
melted sand.
2006-09-21 03:08:13 · answer #8 · answered by ilovecopeland 2 · 1⤊ 1⤋
silica.
2006-09-21 07:15:55 · answer #9 · answered by go4sambhav 1 · 0⤊ 0⤋