ionic bonding

Cards (9)

what is an ion?
an electrically charged atom or group of atoms formed by the loss or gain of electrons
why do ions gain or lose electrons?
to obtain a full outer shell
what are negative ions called?
anions
what are positive ions called?
cations
what formulae method can be used for ionic compounds?
'swap + drop method'
what do ionic bonds consist of?
regular arrangements of alternating positive + negative ions
between positive + negative ions are strong electrostatic forces of attraction - they hold the compound together
describe ionic lattices
positive + negative ions in an ionic compound form a giant lattice structure
giant lattice structures have high melting points
why do ionic compounds have high melting + boiling points?
because they have giant ionic lattices
there are strong electrostatic forces of attraction between oppositely charged ions in all directions
the forces need lots of energy to overcome them
are ionic compounds poor or good conductors in solid states? 
poor