Graphite example sentences

In elemental state it is available as coal, graphite and diamond; however, in combined state it is present as metal carbonates, hydrocarbons and carbon dioxide gas (0.Crucibles made from graphite are inert to dilute acids and alkalies.Other forms of elemental carbon like carbon black, coke, and charcoal are all impure forms of graphite or fullerenes.Fullerenes are made by the heating of graphite in an electric arc in the presence of inert gases such as helium or argon.But, sometimes single element minerals like sulphur, copper, silver, gold, graphite etc.Diamond and graphite are two well-known crystalline forms of carbon.It occurs in the elemental form as diamonds and graphite.Graphite structure is formed by the hexagonal arrays being placed in layers one above the other.Graphite fibres embedded in plastic material form high strength, lightweight composites.Electrons are mobile and, therefore, graphite conducts electricity along the sheet.Being good conductor, graphite is used for electrodes in batteries and industrial electrolysis.It is very important to know that graphite is thermodynamically most stable allotrope of carbon and, therefore, ?f H of graphite is taken as zero.Diamond is the hardest substance known while graphite is smooth and slippery.For this reason graphite is used as a dry lubricant in machines running at high temperature, where oil cannot be used as a lubricant.Both diamond and graphite are formed by carbon atoms, the difference lies in the manner in which the carbon atoms are bonded to one another.