Carbon constitutes pencil lead, charcoal and diamond. Although they appear different in appearance, they are chemically the same.
Diamond is shiny and hard due to the crystalline arrangement of carbon atoms in it. Graphite or pencil lead has such an arrangement, that there are free electrons which make it a conductor of electricity. Elements like this, which are chemically the same but exhibit different physical properties are called allotropes, and the phenomenon is termed as allotropy.
Both diamonds and graphite -- pencil lead -- are allotropes of carbon.
Carbon is found in both diamonds and pencils.
Coal, pencil lead, and diamonds all contain carbon.
Pencil lead is actually not lead (Pb) at all, but it is graphite. And graphite is simply carbons atoms. So, no, it is NOT a compound mixture.
If you're talking about pencil lead, it's made up of layers and layers of carbon. For example, when you write with pencil, the lines that you make on paper are just layers of carbon that had come off your pencil lead.
Pencil lead is a mixture of graphite (or other colored pigment) and a binder (e.g. clay, wax, plastic, grease).
Carbon is found in both diamonds and pencils.
You're thinking of carbon. Both pencil lead and diamonds are allotropes of carbon.
Coal, pencil lead, and diamonds all contain carbon.
Carbon. Diamonds are essentially carbon. So are coal, charcoal and pencil lead (which is graphite).
yes yes it is
Coal, diamonds, pencil lead, etc...
Lead.
No, the lattice structure of diamonds is different from the lattice structure of lead or graphite, although both are formed from carbon. (The answer assumes that you are referring to pencil lead and not the chemical lead: Pb.)
Lead is an element, it is not made of anything but lead. But if you are talking about pencil lead then pencil lead is made of graphite.
carbon.
Carbon
carbon