Carbon generally forms four covalent bonds with other atoms in larger molecules.Atomic number 6; atomic weight 12.011; sublimation point above 3,500°C; boiling point 4,827°C; specific gravity of amorphous carbon 1.8 to 2.1, of diamond 3.15 to 3.53, of graphite 1.9 to 2.3; valence 2, 3, 4.
(kär'bən) Symbol CA naturally abundant, nonmetallic element that occurs in all organic compounds and can be found in all known forms of life.
Diamonds and graphite are pure forms, and carbon is a major constituent of coal, petroleum, and natural gas.
Naturally occurring graphite occurs in two forms, alpha and beta.
These two forms have identical physical properties but different crystal structures.
Graphite, one of the softest materials known, is a form of carbon that is primarily used as a lubricant.
Although it does occur naturally, most commercial graphite is produced by treating petroleum coke, a black tar residue remaining after the refinement of crude oil, in an oxygen-free oven.This black soot, also known as lampblack, gas black, channel black or carbon black, is used to make inks, paints and rubber products.It can also be pressed into shapes and is used to form the cores of most dry cell batteries, among other things.When more finds came to light with what also appeared to be rickets, it was considered far too much of a coincidence and for lack of any other explanation they became relegated to a sub-human category.The French palaeontologist Marcellin Boule, concluded walked stooped forward which fitted in with the then new current thinking of Darwins evolutionary theory of the origin of man (these new assumptions were made post Darwinism 1859). Wiens has a Ph D in Physics, with a minor in Geology.