no, just carbon and clay, baked to make it hard, the more carbon the darker the writing
lead pen because a lead pencil is a regular pencil.
Pencil lead does not have coal. Pencil lead contains graphite.
lead pencil is incorrect because it lead pencil
there is no lead in lead pencil.
There is no lead in pencil - Pencil is made from graphite
Pencil lead is a compound
Pencil lead isn't really lead, it is graphite, a form of carbon. Pencil lead doesn't have any lead in it whatsoever.
The formula for pencil lead is c3,h2o
we get lead of pencil from the mixture of clay and graphite
Pencil lead is a conductor.
The lead pencil was invented on 1564.
Pencil lead is made of graphite and clay. Newer recipes for pencil lead use waxy polymers to bind the graphite to produce a lead that does not snap when the pencil is flexed.