Carbon dating used
This black soot, also known as lampblack, gas black, channel black or carbon black, is used to make inks, paints and rubber products.
The physical and chemical properties of carbon depend on the crystalline structure of the element.
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.
Its density fluctuates from 2.25 g/cm³ (1.30 ounces/in³) for graphite and 3.51 g/cm³ (2.03 ounces/in³) for diamond.
The melting point of graphite is 3500ºC (6332ºF) and the extrapolated boiling point is 4830ºC (8726ºF).