Chemistry help!?

Question

Explain why glass, which is made mainly of SiO2(subscript), is often used to make cookware. (Hint: what properties does SiO2 have because of its structure?)

Answer 1

Glass is good because it can be formulated to withstand extreme fluctuations in temperature. For example, Pyrex ads used to show their casserole dishes going directly from the freezer to a 400 degree oven.

It can be made transparent so it's easier to check on your dish while it's baking.

Glass is very easy to clean and doesn't easily scratch or discolor.

It's non-reactive, so unlike copper or aluminum, it won't interact with acidic foods like lemon juice.

Answer 2

Each Si is connected to four O's, which in turn are each connected to two Si's. The network of atoms extends to infinity. Also, the solid is an amorphous glass rather than a crystalline solid. So the soilid glass is "water white." With the admixture of other elements like boron, one can make Pyrex glass, which withstands sudden changes in temperature.

Answer 3

It can sustain its molecular structure when in extreme heat environments (i.e. the oven) before it reaches its melting point.