2- Bonding, Structure + Properties of matter Flashcards
what is a metallic bond
Positive metal ions in a ‘sea’ of delocalised
electrons
what is a polymer
A long chain molecule made up of repeating
monomer units.
what is a nanoparticle
A very tiny particle, 1x10-9m.
why doesnt diamond conduct electricity
There are no delocalised free moving electrons to carry charge
what is the bonding/forces betweeen graphite layers
weak intermolecular forces
why is graphite a good conductor of heat/electricity
Delocalised electrons can transfer thermal energy/electric charge
what is the name for a single layer of graphite
graphene
what are fullerines
covalent structures with hollow shapes
how many carbon atoms does buckminsterfullerene have
60
do fullerines have delocalised electrons
yes, therefore they can conduct heat and electricty
what factor makes fullerenes good catalysts
high SA:Vol ratio
what does high tensile strangth mean
resistant to being stretched
ionic compounds have a regular ______ structure
lattice
In ionic compounds, _________ forces of attraction act in all directions between the _______ charged ions
In ionic compounds, strong electrostatic forces of attraction act in all directions between the oppositely charged ions
why do ionic compounds conduct electricity if they’re melted/dissolved underwater
he charged ions in a molten or dissolved ionic compound are free to move.
