Why does diamond differ so much from graphite if both are carbon?
Quick Answer
Diamond and graphite are different because their carbon atoms are arranged in different crystal structures. The structure determines whether the material is hard and transparent or soft and slippery.
The Full Story
Diamond and graphite are allotropes of carbon, meaning they are made of the same element but arranged differently. In diamond, each carbon atom forms four strong bonds in a three-dimensional network, making it extremely hard and transparent. In graphite, carbon atoms form flat layers with weaker forces between the layers, so they slide easily and make a soft, dark material. The difference is a classic example of how structure can radically change properties.
Key Facts
YouTube Angle
Suggested video title for this topic:
"Why can the same element become either a gem or pencil lead?"