Graphite is formed from layers of carbon. These layers are very strong but there are very weak links between the layers themselves. This means that layers can slide off the end i.e. leaving a trace behind on the paper.
pencils such as lead pencils
Graphite pencils typically have a matte finish, while lead pencils have a shiny appearance. Additionally, graphite pencils produce darker markings compared to lead pencils of the same grade.
Mechanical pencils, like the regular kind of pencils, use graphite.
both, lead is made of graphite.
you would find graphite A.K.A black lead in pencils occasionally some paints
Lead was never actually used in pencils. The "lead" in pencils is actually a mix of graphite and clay. The switch to using graphite in pencils occurred in the 16th century.
People around the world don't put lead in lead pencils or any pencils! They put something called graphite. They use graphite because lead is poisonous. If a peice of lead touched you, you would have poison in you. Then eventually you would die. So that is what people put in lead.
Pencils are no longer made with lead. They are made with a mixture of graphite and clay. This combination produces the "lead" in modern pencils.
graphite
Not in modern pencils. They contain graphite.
Pencils switched from using actual lead to graphite in the 16th century, when it was discovered that graphite was a more suitable material for writing due to its softer and darker marks than lead. This change occurred in England around 1564.
Lead pencils do not actually contain lead; they are made of graphite. Graphite is not toxic to humans, so there is no risk of lead poisoning from using pencils. However, ingesting graphite or pencil fragments can cause mechanical irritation in the digestive tract.