WebOct 15, 2009 · Diamonds are very hard, and graphite is very soft. Why are some metals such as sodium is soft while other are hard? Some metals, such as sodium and potassium, are rather soft, while... WebDiamond is a form of carbon in which each carbon atom is joined to four other carbon atoms, forming a giant covalent structure. As a result, diamond is very hard and has a high melting point....
Describe why diamond is hard and graphite is soft? MyTutor
WebJun 12, 2024 · The soft substance is due to its weak intermolecular forces between its layers. Diamond is hard because of it’s giant lattice of bonds. Which among the following is the hardest? There is a substance called graphy. Diamond is a very difficult material. Diamond’s thermal and electrical properties are very good. Web178 rows · The Mohs hardness scale measures a mineral's resistance to … bnbuilders headquarters
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WebJul 5, 2024 · Gemstone hardness is one of the primary factors when making this comprehensive determination of wearability. For example, gemstones such as opal (Mohs 5.5 - 6.5), moonstone (Mohs 6 - 6.5) and pearl (2.5 - 4.5), are considered to have poor wearbility and should, therefore, be worn in earrings and pendants. If you have your heart … WebFeb 24, 2024 · The rule of thumb: use a hard bond on soft concrete; use a soft bond on hard concrete; and a medium bond on a medium hardness. “A metal bond diamond abrasive is … WebMar 21, 2024 · The fullerene molecule has excellent mechanical rigidity. At the same time, the fullerite crystal is a soft material under normal conditions, but becomes harder than diamond under pressure... clickpnw