A "fullerene" or "bucky ball" - named after designer Buckminster Fuller - is a hollow, cage-like sphere. In this case, one composed of interlinked carbon atoms.
Carbon into carbon monoxide and carbon dioxide
There are three forms of pure carbon: graphite, coal, and diamond. All three can be made perfectly pure, although coal is usually the least pure when found in nature. All have some impurities when found in nature however.
carbon, nitrogen and oxygen
Graphite and Diamonds are both allotropes of Carbon.
carbon nanotubes
You've described a carbon nanotube.
hollow ball with a pattern like a geodesic dome
Diamond is an allotrope of carbon: pure carbon is made of pure carbon, by definition.
Yes, carbon black is pure carbon.
It is not pure carbon, it is what is left after wood has been partially burned.
Carbon is a pure substance with the chemical symbol "C"
One pure form of carbon is diamond.
Yes, it is pure carbon if it is flawless.
Pure substance; it is one form of pure carbon.
No, it is not a mixture at all, it is a pure substance as the word "pure" might imply.
pure carbon is coal, also diamonds are coal that was under a lot of pressure. so both diamonds and coal are pure carbon.