Ancient writing instruments were actually pieces of lead, but modern pencils contain graphite mixed with clay. The mixture's color is a lot like that of lead and it makes marks like a piece of lead, so the word is still used.
The number indicates how hard the mixture is. #2 "lead" is fairly soft and is used for ordinary writing. #4 pencils are very hard and take an extremely fine point but are difficult to use for writing because they can actually cut through paper if pressed hard enough. They're used primarily in things like art and drafting, where a thin line is needed and the user is going to be very careful.
None. I believe the pencil has graphite as the writing material.
Lead pencils such as NO. 2 pencils have no lead. The "lead" in them is actually graphite.
no, a pencil will float therefore it is less dense than water(ticonderoga #2 pencil was used)no pencils were harmed in the execution of this experiment
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You bend over if on the floor open your fingers so that your thumb is on the opposite side of your 4 fingers, (some people only use 3 or 2), center the pencil in the middle of your fingers and thumb then close in your fingers so that the pencil gets caught in between your thumb and fingers finally lift your arm with the pencil and then your done.
19 cm
Volume is strictly geometrical; it refers to an amount of space. Capacity can be an amount of anything. Heat capacity, for example, is the amount of energy needed to increase the temperature of a given substance. Please type in: What is the difference between capacity and volume?- This is for people who don't under stand this answer.
Yes!!!
To dissolve pencil lead from the skin, place the pencil in a container of H2O2 and it should dissolve in a day or 2.
The 2 is the number of the lead in the pencil.
number 2 describes the thickness of the lead, and darkness of the lead
None. It is graphite not lead in a pencil. How much graphite in a pencil? About 2/3 cubic inch (=6" x pi * (3/16)^2)
.There are so many units of length.2 mm is the lead of a no 1 pencil .
It has to do with the kind of graphite or material used as the lead for the pencil.
The # is reference to the hardness of lead A number 2 pencil is averagely hard aka HB
I don't quite understand what you mean by HB-2 pencil but if you mean HB pencil / #2 Pencil it is not the softest pencil. Pencils scale from 9H to 9B, (HB in the middle) and 9B would the softest and darkest pencil there.
The number of the pencil is based on the type of carbon lead used inside. The thicker the carbon lead gets the higher the number of the pencil becomes. If you notice a mechanical pencil is 0.9mm in diameter so it would be called a #0.9 pencil. A #2 pencil's lead is 2mm in diameter. So Why would we call a pencil a #3 pencil? Because it's lead is 3mm in diameter.
The lead of a common pencil.
The "number 2" designation refers to the "hardness" of the lead. The higher the number, the "harder" The "7mm" designation refers to the "thickness" of the lead. The higher the number, the thicker. They are not the same pencil.