Glass is a poor conductor of heat, but will expand upon heating. The combination of these two things means that if glass is heated quickly, it will develop stresses and may crack.
The glass used on stove tops is special glass with a low coefficient of expansion, so one of the danger factors above is missing.
Glass used as laboratory ware is often very thin, or made glass with a low coefficient of expansion.
Another technique used to make glass more heat-resistant (e.g. cups and pans) is to pre-stress it (tempered glass) so that the surface is under compression, and thus resistant to cracking.
Metal on the other hand, is not usually subject to brittle fracture, and it is usually a good conductor of heat.
Aravind kumar
because of nucleus
RANJIT VARADARAJAN
Glass is a poor conductor of heat, but will expand upon heating. The combination of these two things means that if glass is heated quickly, it will develop stresses and may crack.
The glass used on stove tops is special glass with a low coefficient of expansion, so one of the danger factors above is missing.
Glass used as laboratory ware is often very thin, or made glass with a low coefficient of expansion.
Another technique used to make glass more heat-resistant (e.g. cups and pans) is to pre-stress it (tempered glass) so that the surface is under compression, and thus resistant to cracking.
Metal on the other hand, is not usually subject to brittle fracture, and it is usually a good conductor of heat.
srithar
in b/w metal that have bounded by covalent band but in glass doesnt.so when it heat the structure will not be break.
Nivassundar
it is due to nucleus
because of nucleus
because of nucleus
metals are bounded by covalent bond