Next we're going to look at a voltaic;
cell this one is made of copper and zinc.
We have copper metal, and a source of
copper ions, and zinc metal, and a source of
zinc ions. In this particular reaction,
the copper is reduced, and the zinc is
oxidized, so the copper is the cathode,
and the zinc is the anode. We can prove
that it creates electricity by hooking
it up to this simple motor.
We can measure the voltage produced by
hooking it up to this multimeter.
One nice thing about the voltaic cell is
the no matter how you hook it up, the
electricity flows. When I switch the
leads my motor just turns the opposite direction.
