C3 Structure and bonding Flashcards
what atoms are in ionic bonding?
a metal and a non metal
what atoms are in covalent bonding
non metals
what atoms are in metallic bonding
metals
what ions does each group form in ionic bonding
group 1= 1+ ions
group 2 = 2+ ions
group 3 = 3+ ions
group 4 = don’t form ions
group 5 = 3- ions
group 6 = 2- ions
group 7 = 1- ions
group 8 = never form ions
what are the properties of an ionic compound
high melting and boiling point
regular lattice structure
conducts the electricity when molten or dissolved in a liquid
what are the properties of a simple covalent compound
low melting and boiling point
weak intermolecular forces
cannot carry charge
what are the three giant covalent structures
graphite
diamond
silicone dioxide
properties of a giant covalent structure
high melting and boiling point
insoluble in water
hard and don’t conduct electricity (apart from graphite)
why can graphite conduct electricity
sea of delocalised electrons
why is graphite soft and slippery
carbon atoms bond to form layers.
there are weak intermolecular forces holding the layers together
so they can easily slide over one another
making it soft and slippery
what are/could fullerenes be used for
transporting drugs to specific sites of the body
catalysts
lubricants (like graphite)
what are fullerenes
large cafe like structure and tubes based on hexagonal rings of carbon atoms
what’s graphene
a single layer of graphite (one atom thick)
what are the properties of graphene
excellent extricate conductivity
