Carbon 14 dating for
All artificially produced graphite is of the alpha type.In addition to its use as a lubricant, graphite, in a form known as coke, is used in large amounts in the production of steel.Living things tend to ingest materials that contain carbon, so the percentage of carbon-14 within living things is the same as the percentage of carbon-14 in the environment.Once an organism dies, it no longer ingests much of anything.Atomic Number: 6 Atomic Weight: 12.0107 Melting Point: 3823 K (3550°C or 6422°F) Boiling Point: 4098 K (3825°C or 6917°F) Density: 2.2670 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Non-metal Period Number: 2 Group Number: 14 Group Name: none What's in a name? Three naturally occurring allotropes of carbon are known to exist: amorphous, graphite and diamond. Carbon is most commonly obtained from coal deposits, although it usually must be processed into a form suitable for commercial use.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.
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. History and Uses: Carbon, the sixth most abundant element in the universe, has been known since ancient times.Amorphous carbon is formed when a material containing carbon is burned without enough oxygen for it to burn completely.A fourth allotrope of carbon, known as white carbon, was produced in 1969.It is a transparent material that can split a single beam of light into two beams, a property known as birefringence. Large molecules consisting only of carbon, known as buckminsterfullerenes, or buckyballs, have recently been discovered and are currently the subject of much scientific interest.