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Lead was used at one time, but lead is poisonous. Children, especially, were poisoned by sucking on their pencils. So graphite was substituted for lead and works very well. Graphite may be superior to lead because it can be made with difference degrees of hardness. I do not know about the relative costs.
Graphite is used in pencil leads because it is soft enough to leave a mark on paper but also hard enough to not break easily. It allows for smooth writing and can be easily sharpened to a fine point. Additionally, graphite is non-toxic and leaves a dark mark, making it ideal for use in pencils.
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What is The predecessor of the graphite pencil?
The predecessor of the graphite pencil was the lead pencil, which used a mixture of graphite and clay for the core instead of just graphite. Lead pencils were first developed in the 16th century.
What metal is used in pencil?
Graphite (carbon), wood and rubber for the eraser.
What are the factors that effects the conductivity of pencil lead?
The factors that affect the conductivity of pencil lead include the quality of the graphite in the lead, the hardness of the pencil lead, and any impurities present in the lead. Higher quality graphite and softer leads typically have higher conductivity, while impurities can decrease conductivity. Additionally, the pressure applied when writing or drawing with the pencil can also impact conductivity.
What is the graphite of a pencil?
The graphite in a pencil is a form of carbon that is bonded together in layers. It is soft and easily leaves a mark on paper when pressure is applied. Graphite is the material that makes up the "lead" in a pencil, allowing for writing or drawing.
Is pencil lead metalic or nonmetalic?
Pencil "lead" is actually graphite, which is a nonmetallic element. Graphite is a form of carbon that is commonly used in pencils due to its ability to leave marks on paper.
When do you use graphite?
1) Graphite is used for making the cores of our pencils called pencil leads. 2) It is used for making carbon electrodes. 3) Powdered graphite is used as lubricant.
The elmenet used in pencil leads?
Graphite.
What mineral is used for making pencil lead?
Graphite is the mineral used for making pencil lead. It is a form of carbon that is known for its ability to leave a mark on surfaces.
What can you use Graphite for?
Graphite is commonly used in pencils, as a lubricant in locks and hinges, as a dry lubricant in industrial applications, and in batteries and fuel cells as a conductive material. It is also used as a component in refractory materials and brake linings due to its high-temperature resistance.
Why is graphite use?
graphite is used as lubricant in machinery.also it is used in making leads of pencils.hence graphite is useful.
What element is used to make the leads in pencils?
Lead is a misnomer when talking about pencils. What you're actually writing/drawing with is graphite. Lead was neverused in the making of pencils.
Is graphite used to make pencils?
Yes, graphite is the primary material used in making pencil cores. The graphite is mixed with clay and other additives to create the desired hardness and darkness levels in pencils.
What mineralis used to make this led in a pencil?
The mineral used to make the "lead" in a pencil is graphite. Graphite is a form of carbon that is known for its ability to leave marks on surfaces, making it suitable for writing and drawing.
Which non-metals is used in making pencil lead?
Graphite, a non-metal, is used in making pencil "lead". It is a form of carbon that is soft and easily leaves marks on paper, making it ideal for use in writing pencils.
The mineral graphite is often used as?
graphite is often used for pencil lead
What is The predecessor of the graphite pencil?
The predecessor of the graphite pencil was the lead pencil, which used a mixture of graphite and clay for the core instead of just graphite. Lead pencils were first developed in the 16th century.
Mineral used in pencil?
Graphite is the mineral commonly used in pencils to create the writing core. It is a form of carbon that allows for smooth writing and drawing.
