Correct.
Although they are based on the same element (carbon) they have vastly different structures and atomic arrangements, resulting in very different physical and chemical properties. Such forms are known chemically as allotropes.
No. coal is coal and diamond is diamond. They are both formed from carbon, but diamond is much harder than coal.
Yes. Both diamond and coal are formed from carbon.
A diamond is not formed from coal. Diamond and coal are both allotropes of carbon, and are formed by different processes.
Coal that has become diamond.
Diamond does not turn into coal when exposed to flame.
No 'coal' turns into 'diamond'. Both coal and diamond are composed of carbon, each being formed at different layers in the earth's mantle.
Coal, yes. Diamond, no.
No,The process in which turns coal into diamond cannot be reversed or "undone"
Probably because both coal and diamond are composed of carbon.
Yes. Both diamond and coal are formed from carbon.
Diamond is more dense that coal.
Coal. Diamonds are coal compressed with great pressure over thousands of years.