Giant Structures Flashcards
What are the physical properties of diamond and graphite
Both giant covalent with high m and b points.
Dimond is a poor conductor graphite is good
What are the properties of giant covalent structures
Doesn’t conduct as a solid or liquid but has a giant structure with high M and B points
Why do giant covalent structures have high melting points
Because they have a giant structure and require lots if energy to break the many covalent bomds
How can i tell what property is a bond
Look at there conductivity.
Ions: only conducts as liquid but nothing else
Covalent: doesn’t conduct in any state
Metallic: conducts as solid and liquid
What is a carbon allortrope
Different forms of the same element in the same physical shape
What are the properties of dimond
Giant covalent lattice
Solid at room temp
High melting and boiling point
No free mobile charged particles so bad conductor
4 bonds per Carbon atom
What is a lattice strucutre
refers to a regular, repeating arrangement of atoms, ions, or molecules
Properties of graphite
Giant covalent
Solid at room temp
High m and b points
Good conductivity as delocalised electrons can move through the structure
Lubricant and can slide
3 bonds per Carbon atom
Properities of buckminsterfullerene
Simple molecular
Low m and b points
Weak intermolecular forces
Poor conductor
Sphere shape and lubricant
3 bonds per Carbon atom
Properties for graphene
Giant covalent
High m and b points
Good conductor - has delocalised electrons
Very hard, can be used for screens
What does nano mean
Nanoscale or 1 billionth of a metere. 1x10^-9
What are fullerenes
Fullerenes are an allotrope of carbon and are known for their hollow, cage-like structures
What are nanotubes
Graphene sheets rolled into cylindrical tubes
What can nanotubes be used for
nanotechnology, electronics and specialised materials.
