justin10slone justin10slone

02-03-2016
Biology

contestada

Both coal and diamonds are forms of elemental carbon. Coal is brittle while diamonds are considered to be the hardest of all substances known. What is the appropriate justification for this?

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mariagsa mariagsa

03-03-2016

Diamond are created from coal after 1000's of years under pressure.
it cause a change in propertied but not elements

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