2007-01-08 03:38:13 · 17 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
If you are talking about hardest NATURAL substance, it is diamond, without any question, with 10 hardness in moho's scale.
But some man-made substances like Beta Carbon Nitride (β-C3N4), Fullerites, or Polymerized Single Walled NanoTubules (P-SWNT), (1.13 times harder than diamond), Ultrahard Fullerite C60 (1.17-1.52 times harder) are also experimentally prepared.
2007-01-08 04:29:52 · answer #1 · answered by saudipta c 5 · 1⤊ 0⤋
I believe diamonds are the hardest substance in the world. Rocks are tested with diamonds at the end of the hardness scale.
2007-01-08 05:49:46 · answer #2 · answered by Sciencemom 4 · 0⤊ 0⤋
Diamond
2007-01-08 03:47:28 · answer #3 · answered by Xam 4 · 0⤊ 0⤋
A diamond. 10 on the Mohs Hardness Scale.
2007-01-08 03:46:50 · answer #4 · answered by The Maestro 4 · 1⤊ 0⤋
Recently a substance harder than diamond has been synthesised, it is called ACN, which stands for Aggregated Carbon Nanotubes (some slight variants on the name exist). It scratches diamond with ease. Check out:
http://www.newscientist.com/article.ns?id=dn7926
2007-01-08 03:49:58 · answer #5 · answered by Sangmo 5 · 0⤊ 0⤋
I would agree with a diamond.....
However, if you asked what the most dense substance in the world is....my wife would say my head.
2007-01-08 05:40:31 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Diamond. A 10 on the Mohn's hardness scale.
There is some dispute that carbon nanorods are even harder.
2007-01-08 03:40:01 · answer #7 · answered by fucose_man 5 · 0⤊ 0⤋
A diamond on Viagra
2007-01-08 06:00:32 · answer #8 · answered by Anonymous · 1⤊ 0⤋
a diamond is the hardest substance...and of course...a girls best friend!! (so they say!!)
2007-01-08 05:42:15 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Carbon. In form of diamond.
2007-01-08 05:44:05 · answer #10 · answered by Dhiman B 2 · 0⤊ 0⤋