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.
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!!!
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
Two physical properties of pencil lead are its gray color and its smooth, solid texture.
A 2 soft pencil refers to the hardness level of the pencil lead. A 2 soft pencil will have a softer lead that is darker and smoother to write with compared to harder pencils. The number 2 is typically used in the United States to indicate medium softness, while in other countries, the same pencil may be labeled as HB.
To determine if an unmarked pencil has number 2 lead, you can perform a simple test by making a mark on a piece of paper with the pencil. Then, use your fingernail to gently rub the mark. If the mark is dark and shiny, it is likely number 2 lead, as number 2 lead creates a distinct mark that is easily smudged. Additionally, you can also check for the presence of the number "2" or "HB" on the pencil itself, as these markings are commonly used to indicate number 2 lead.
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.