They're made from silica. Why not structures from cars like that?

Wheat flour is a powder made from the grinding of wheat used for human consumption.

If a reversed order of running of the compounds is desired, an apolar stationary phase should be used, such as C18 functionalized silica.

Dry water actually consists of 95 percent liquid water, but the silica coating prevents the water droplets from combining and turning back into a bulk liquid.

Glass for flat glass has a higher magnesium oxide and sodium oxide content than container glass, and a lower silica, calcium oxide, and aluminium oxide content.

Soft flour is usually divided into cake flour, which is the lowest in gluten, and pastry flour, which has slightly more gluten than cake flour.

Generally speaking, more mafic magmas, such as those that form basalt, are hotter and less viscous than more silica rich magmas, such as those that form rhyolite.

China In China, porridges such as rice congee, or those made with other ingredients (including corn meal or millet) are often eaten for breakfast.

For instance, reagent quality water must have very low levels of impurities such as sodium and chloride ions, silica, and bacteria, as well as a very high electrical resistivity.

then the man shall bring his wife to the priest, and shall bring her offering for her the tenth part of an ephah of barley meal. He shall pour no oil on it, nor put frankincense on it, for it is a meal offering of jealousy, a meal offering of memorial, bringing iniquity to memory.

Then shall the man bring his wife unto the priest, and he shall bring her offering for her, the tenth part of an ephah of barley meal he shall pour no oil upon it, nor put frankincense thereon for it is an offering of jealousy, an offering of memorial, bringing iniquity to remembrance.

Toothpaste typically has small particles of silica, aluminum oxide, calcium carbonate, or calcium phosphate to grind off stains formed by colored molecules that have absorbed onto the teeth from food.

For example, wheat endosperm is ground into flour for bread (the rest of the grain is included as well in whole wheat flour), while barley endosperm is the main source for beer production.