Its made of chickens
Chemistry lab beakers may be made of borosilicate glass, including Pyrex. The glass is less likely to break when subjected to the temperature extremes found in lab work.
Lab beakers are made of glass, which gives them excellent chemical resistance. Some lab beakers are also made of special plastic like HDPE, and even these can withstand most chemicals like hydorchloric acid.
BORON. Fun fact: not only does it increase its strength but also raises its resistance to heat. Boron glass is what most science beakers, test tubes, baking trays, ect. are made from.
Glass is made in most countries of the world.
The kind that's made of glass. The kind that's made of glass.
Most glass is made from a molecule called Silica.
It depends who you mean by "they". Glass was not widely available during the Anglo-Saxon period, except for the most wealthy who had drinking vessels of green glass. Small bottles, beakers and other items were made of green glass through the medieval period, but it was always very expensive and out of the reach of most people - much of it was imported from the Middle East, Italy and other parts of Europe. By the late medieval period clear glass was being made, but it was still something too expensive for ordinary folk. Very little glass has survived for the medieval era, except in Church contexts where painted or stained glass was used frequently in windows. See links below for images:
Because glass is not expensive, transparent, not porous, doesn't react with many chemicals, it is easily manufactured and formed in very special installations, easily joined with metals, etc.
Pyrex dishes are made of a special glass that can withstand high heat without shattering. The unique composition of Pyrex allows it to expand and contract evenly, making it ideal for baking and cooking. This type of glass is also nonporous, so it does not retain odors or flavors from previous use.
The most commonly used apparatus used in chemistry labs are beakers, round-bottomed flasks, glass bottles, Erlenmeyer flasks and wash bottles. Some of the other most used apparatuses used are microscopes.
Yes, most vessel sinks currently available are made out of decorative glass but it is possible to purchase vessel sinks made out of stone, clay, or terra cota.
The most commonly used insulation is glass wool. this is made from sand which is melted and spun into glass fibres.