Electrolysis Flashcards
electrolysis
using electrical current to break chemical bonds
anode
positive electrode
cathode
negative electrode
electrolyte
solution that will conduct and electrical current
what ions are in
what is electrolysis used for
to extract reactive metals from their ores
anion
atom(s) that have gained electrons and are now negatively charged
what are most anions formed from
formed mostly from non-metals
from which rock can you get aluminium
bauxite
cation
atom(s) that have lost electrons and are positively charged
what are most cations formed from
mostly formed from metals
DC
direct current
dissociation
breaking up molecules in to ions when dissolved in water
electrode
conducter used to make contact w circuit
halide
ion formed when halogen gains 1 electron
halogen
group 7
what do halogens produce when react w metals
salt
oxidation
gain of oxygen or loss of electron
reduction
loss of oxygen or gain of electrons
what does electrolysis need
DC, cathode, anode
where will positive ions go
cathode
where will negative ions go
anode
