Question

what is graphite and state its uses​

Answer 1

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Graphite is a naturally-occurring form of crystalline carbon. It is a native element mineral found in metamorphic and igneous rocks. Graphite is a mineral of extremes. It is extremely soft, cleaves with very light pressure, and has a very low specific gravity.

The important uses of graphite are as follows.

1. The major use of graphite is in  making lead pencils of different hardness,  by mixing it with different  proportions of clay. The weakly held layers of  carbon atoms in graphite  easily slide over each other and are left behind on  paper as black  marks.

2. Due to its slippery nature, graphite is used as a dry lubricant in machine  parts.

3. Being resistant to chemicals and  having a high melting point and also  because it is a good conductor of  heat, graphite is used to make crucibles.

4. The presence of free electrons makes graphite a good conductor of  electricity and it is used to make electrodes.

5. Graphite has the ability to absorb  fast-moving neutrons, thus, it is used  in nuclear reactors to control  the speed of the nuclear fission reaction.

Answer 2

A grey crystalline allotropic form of carbon which occurs as a minimal in some rocks and can be made from coke.
It is used as a solid lubricant in pencils and as a moderator in nuclear reactors.