Chemistry C Flashcards
What is diamond made of?
carbon
how does carbon form within a diamond?
Each carbon bonds with 4 other carbons in a covalent bond
what is the melting point of Diamond?
very high melting point as a lot of energy is required to break the millions of strong covalent bonds.
Can diamond conduct electricity?
No, as there are no free electrons.
What are the physical properties of Diamond?
strong and hard due to the millions of strong covalent bonds held together in the giant structure
What is silicon dioxide made from?
silicon oxygen- forms the same structure and same properties as diamond.
what is graphite made from?
carbon
how does graphite bond?
each carbon bonds with 3 other carbons in a covalent bond. The 4th electron is delocalized to form layers of carbons and layers of electrons.
What is the melting point of graphite?
high melting point as lots of energy is needed to break strong covalent bonds.
Can graphite conduct electricity?
does conduct electricity as delocalized electrons are able to move and carry the electrical current.
how does graphene bond?
Graphene is a single-atom thick layer of graphite with strong covalent bonds between each carbon atom.
What is the melting point of graphene?
high melting point due to the strong covalent bonds.
Can graphene conduct electricity?
Like graphite, graphene conducts electricity well because it has delocalised. electrons. that are free to move across its surface.
what is nano science?
The study of structures between 1 and 100 nanometres (nm) in size.
Used in: medicine, electronics
What are fullerenes?
Fullerenes are molecules. of carbon atoms with hollow shapes.
buckminsterfullerene (c60) was the first fullerene to be discovered
