meteorites...
"form"
Chemical changes
Frequently kidney stones are formed from calcium oxalate.
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Traditionally, irons were made of iron. They were heated by a fire and then applied to clothes. Today, irons are usually made of other metals.
These stones are composed of either calcium and phosphate or calcium and oxalate.
carbon 3.0-4.0 and silicon 1.8-2.8
Almost entirely ice, with maybe a few stones.
"form"
Meteorites are named according to their composition as ordinary chondrites, carbonaceous chondrites, achondrites, iron meteorites, and stony-irons.
Chemical changes
Frequently kidney stones are formed from calcium oxalate.
Pricking irons are used to inprint leather at an angle and at reguler distances which promotes correct insertion of the awl. Pricking irons come in different sizes which refer to the number of teeth per inch.
The two types of gallstones are cholesterol stones and pigment stones. Cholesterol stones are usually yellow-green and are made primarily of hardened cholesterol. They account for about 80 percent of gallstones. Pigment stones are small, dark stones made of bilirubin.
Depending on the chemical composition, they can be partially or integrally dissolved or absolutely not attacked.
Curling irons, straightening irons, and crimpers are some. You can also use real irons, but people only did that before straightening irons were invented.
In "Moby Dick," irons refer to the harpoons used by the crew of the whaling ship to hunt and kill whales, including the elusive white whale known as Moby Dick. The harpoon was a crucial tool for the whalers to secure their catch and make the kill.