I believe that Diamond is condensed Carbon.
Examples of pure substance: gold, silver, carbon dioxide, hydrogen
Salt. Carbon, if you have a carbon filter for your fish tank.
Salt. Carbon, if you have a carbon filter for your fish tank.
Elements.
Charcoal, Diamond, Graphite, Coke
Water is a compound. A pure metal is an element. Graphite (a pencil lead) is the element carbon. These are all examples of a pure substance.
Some carbon sources are: plants, oceans, forests and lots of other things.
A pile of carbon
Some examples of pure speech are protests, assemblies, demonstrations, etc.
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.