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A pencil has two main parts: the "lead" - pronounced "led" (as in "bed") - which is the working part of the pencil, and the "jacket" which surrounds it.
The brilliant idea of the pencil as an invention is that, after the point of the lead gets worn away by using it to make marks (as in drawing or writing) the outer jacket can easily be pared away to make a new point by using a sharp knife or a pencil sharpener.
The "lead" was originally made from a metal element which is called Lead in English. [Lead actually has the chemical symbol "Pb" from its Latin name Plumbum.]
Because the metal lead is poisonous - and also because it doesn't make such good marks as graphite - for a long time the "lead" part of pencils has actually been made from a mixture of particles of several other materials: some carbon in the form of graphite (made from roasting wood in a closed stove), some clay and several other materials to give it strength and flexibility, all bound together with glue.
The jacket of a pencil is usually made from wood which is glued well around the lead. However, for special applications, other materials such as mixtures of plastic, rubber and other materials have also been used instead of plain wood.
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∙ 12y ago
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What material is the inner core made of?
The inner core is made of nickel and iron.
What are led pencils made of?
all pencils are made up of graphite
Are pencils made out of lead?
No, they are made out graphite and clay. the only reason why they are called "lead" pencils is simply because way back in ancient greek times, they once used lead as a writing utencial. But after used a few times they quickly stopped the use of lead in pencils.
What is a typical virus made of?
A typical virus is made up of a core of genetic material, either RNA or DNA. It is engulfed by a protective coat referred to as a capsid which is made up of protein.
Why is the Earth core made out of metal?
Earth was largely molten when it was newly formed. The iron and nickel that now make up the core were the densest common materials, so they sank tot he center to form the core.
What material is the core of common pencils made of?
It is commonly thought that it is lead, but it is actually graphite.(obviously) Dr. Illiad J. Dawson
Are all number 2 pencils wood?
No. The number designation refers to the hardness of the graphite core and not to the material the pencil is made of.
What is pencil made of?
pencils have a wooden outer shell and a graphite core
What are lead pencils made out of?
The lead in pencils are not made out of lead, as is common belief. Pencil lead is made out of graphite.
What materials do you need to make a pencil?
Pencils are made of wood, with a core of graphite. They are usually painted. Coloured pencils are generally made of a wax core which has a pigment added.
What material are pencils made from?
they are made of water vapour that boils the wood and graphite
What material is the inner core made of?
The inner core is made of nickel and iron.
What materials are?
Basically any physical thing than can be combined or made into another physical thing is a material. Just looking around my desk, plastic is a common material in my phone and some pens. Wood is a material in pencils, and the desk itself. Silicon is a material in the computer. Nitrogen is a material in the air.
What are the composition of the core?
The core is made up of Iron and Nickel.
Why is the inner core and the outer core separated into two layers if they are made of exactly the same material?
'Cause they ARE made of different things
What are viruses inner core made of?
The inner core of a virus is made up of genetic material that contains directions for creating new viruses.
Was pencils made in the US?
Why, yes. Pencils was made in the U.S.
