❓ why
Why is diamond so hard but graphite so soft?
Quick Answer
Both are made of carbon, but their atoms are arranged differently. Diamond has a rigid 3D network, while graphite has layered sheets that slide easily.
The Full Story
Diamond and graphite are allotropes of carbon, meaning they are different structural forms of the same element. In diamond, each carbon atom bonds to four others in a strong tetrahedral lattice, making the crystal extremely hard. In graphite, each carbon atom bonds in flat sheets with weak forces between layers, so the sheets can slide and flake off. That is why diamond is used in cutting tools while graphite is used in pencils and lubricants.
Key Facts
1.Both diamond and graphite are pure carbon
2.Diamond has a 3D tetrahedral lattice
3.Graphite’s layers slide easily
YouTube Angle
Suggested video title for this topic:
"Same element, opposite personalities: the carbon paradox."
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