What do diamonds and pencil lead have in common?
Diamonds and graphite, the "lead" in pencils, are both made entirely of carbon. The only difference is how their atoms are arranged.
Pencil facts and facts about pencils.
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Diamonds and graphite, the "lead" in pencils, are both made entirely of carbon. The only difference is how their atoms are arranged.
Pencil "lead" doesn't contain any lead. It's made of graphite, a form of carbon, mixed with clay.
According to legend, Pablo Picasso's first word was "piz," short for the Spanish word for pencil.