C2 Chemistry - Electrolysis Flashcards
what is electrolysis?
decomposition of a liquid using electricity
what are electrolytes
liquids which conduct electricity
what is the anode?
the positive electrode
what is the cathode?
the negative electrode
O
I
L
R
I
G
what does this mean?
oxidation is less
reduction is gain
what is reduction
its the gain of electrons
whats oxidation
the loss of electrons
what are half equations?
they show the reactions taking place at the electrodes
what must you make sure when doing a half equation?
the number of the electrons is the same for both half equations
what are the uses of electrolysis?
3 things
electroplating
production of hydrogen for fuel
production of oxygen for space craft
what is electroplating?
uses electrolysis to coat the surface of one metal with another metal
why is electroplating used?
to stop metals from rusting
