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The graphite used in pencils is quite soft. Clay is added to the graphite to strengthen the 'lead' of the pencil. The amount of clay used changes the pencil's rating, with HB being the commonest, B2 being softer (darker marks), and H being harder (lighter marks).
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∙ 9y ago
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How hard is E3 pencil lead?
very hard
What in polonium makes pencil lead shiny?
Any link between polonium and a pencil.
What is the graphite of a pencil?
It is the part of the pencil that makes the mark on the paper. Pencils used to use lead for this but the lead has been replaced with graphite.
What is the predominant component that makes a pencil hard?
525
Why can pencil lead can be used to make a light bulb?
A "pencil lead" is a mixture of the graphite allotrope of carbon mixed with clay and baked hard. While a pencil lead will conduct electricity, it can not be used to make a light bulb.
What is a number 2 pencil?
The # is reference to the hardness of lead A number 2 pencil is averagely hard aka HB
Why rubbing lead pencil on a key makes it turn in the lock?
The material that made pencil to write is a mixture of graphite.
How can you help prevent pencil lead from fading?
To prevent a pencil led from fading is to not bare down so hard on the paper.
Is it called a lead pen or a lead pencil?
lead pen because a lead pencil is a regular pencil.
Does pencil lead have coal in it?
Pencil lead does not have coal. Pencil lead contains graphite.
Why the term lead pencil incorrect?
lead pencil is incorrect because it lead pencil
What is the percentage of lead in the lead pencil you are using?
there is no lead in lead pencil.
