Drag each label to the correct location on the image. Label each half cell in this diagram of a voltaic cell to identify which electrode it contains and the process occurring at the electrode.

anode
cathode
reduction
oxidation

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

that tool would be a compass

it is the most commonly accepted one