140 degrees Fahrenheit
pencil
how big is your pencil?
lead pencil is incorrect because it lead pencil
you can sharpen a pencil and not a pen a pen has ink and a pencil does not.
If you're talking about the graphite part of the pencil, graphite melts at 3550 degrees Celsius.
With fire.
The wood in a pencil will burn in three or four minutes. The graphite inside is pure carbon which will not burn, but at around 800 degrees Celsius will react with oxygen to form carbon dioxide (CO2) and carbon monoxide (CO).
Hair will burn at 223 degrees Celsius. Hair can however burn at a much lower temperature if it is damaged.
They burn at about 2,000°F
The "lead" in the pencil is a form of carbon called graphite. Graphite has a melting temperature of about 6606 degrees F. So, unless you can heat the graphite to that temperature, it will remain as a solid.
burn
it burn at 420 degrees Fahrenheit
The temperature of 900o C is very high; pretty much everything than can burn, will burn, at that temperature.
it burn at 420 degrees Fahrenheit
146
A pure silk can burn at about 148 degrees. However, the silk present in fabric has a lot of chemicals added to it and is prone to burn at a far lower temperature.