A material that loses cohesion (meaning it breaks into separate pieces) when it fails is known as a brittle material.
Therefore the material exhibits brittle behaviour.
Graphite is the main ore of pencil lead.
To make it harder. Pure graphite would be too soft for use as a writing pencil.
5 things in school that come from minerals would be graphite in your pencil, Metal pipes, water in the water fountain, metal doorknobs, lockers, salt in the cafeteria. Well I put 6 but i hope it helped! :)
At the moment you can obtain 3 different varieties: the traditional one (graphite refill encapsulated inside a wooden wrapper of cedar), the propelling pencil (pens with very fine refills of graphite) or the bar pencil (Similar to the propelling pencils but with thicker and more resistant graphite bars. Approx.. 5-9 mm in diameter).
Graphite is a gray carbon based substance used in pencil lead. Graphite has a lattice like structure and is arranged in layers so as to be easily rubbed apart unlike diamond which is a more interlocking structure of pure carbon and is extremely hard and unmalleble.
Graphite and TiO2 for the pencil paint
Graphite
Graphite
What is the mineral used in the pencil that you write with? Graphite.
graphite is often used for pencil lead
The part of the pencil that does the actual writing, called the pencil lead, is actually made of a mineral called graphite.
Graphite.
Graphite.
A pencil is made of graphite, which is a mineral containing carbon. Graphite comes from beneath the Earth.
You can obtain graphite from an ordinary pencil lead, is made from graphite (not lead).Graphite is a natural occurring mineral and it is mined just like any other industrial mineral.
The "lead" of a pencil is made from graphite, which is a form of carbon.
Graphite.