A diamond is a form of pure carbon that is so hard that it can't be changed into a cutting tool.
It is Diamond.
Diamond
Diamonds.
All organic compounds contain carbon.
The atoms are bonded together in a rigid network which makes diamond very hard. Each carbon atom forms 4 covalent bonds
it forms a hard coat of ash when cooled down.
yes, diamond is made of carbon. Diamond is a macromolecule made of many carbon atoms. Each carbon atom is joined to 4 more carbon atoms each. Having each atom of carbon bonded to four other atoms is why diamond is so hard- there are lots of strong chemical bonds to overcome.
Theoretically yes, but it is quite implausible. Silicon forms less stable structures than carbon and silicon compounds would be solid at standard conditions and would, therefore, be quite hard to use by organisms.
The structure of the carbon atoms make diamonds hard, the hardest natural mineral. Their crystal habit is octahedral and their crystal system is isometric-hexoctahedral.
It's not both graphite graphene and dimond are pure forms of carbon. Dimond is just has a different arrangement of atoms that make is very hard and transparent.
Hard rain forms when it is cold AND it is raining.
All organic compounds contain carbon.
The atoms are bonded together in a rigid network which makes diamond very hard. Each carbon atom forms 4 covalent bonds
Tracks form circles on the surface of a hard disk
The name of hard carbon is Diamond. If you are speaking of coal then it would anthracite. Carbon has another allotropic form which is graphite.
Diamonds
Diamonds
You're thinking of diamond, which is an allotrope of Carbon.
The crystal structure of a element (or a mineral) is determined by the shape of the molecules and the distribution of charges on them. Some elements can have several different molecular arrangements. And each will have a different form. Carbon can exist as Graphite, a slippery powder, as Diamond, a very hard and transparent stone, and as ordinary Carbon, a black dust. This phenomenon is known as Allotropy. Phosphorous another element with different forms. Boron Nitride, another very hard material can also exist as a slippery film, or as a very hard solid, rivalling or perhaps surpassing diamond.
If YOU write in this area, your question goes to the "already answered" bucket- Besides its use as jewelry, Diamond is used where anything incredibly hard is needed. Diamond (dust) is used to make saw blades and drill bits that can cut through just about anything. Graphite, while also composed of carbon, has an entirely different crystal structure, and different uses. Graphite is used as an electrical contactor (a brush) in electrical motors. It makes a great dry lubricant for things like locks, and when mixed with clay, forms the "lead" for ordinary pencils.