during electrolysis three observations are made: the size of both the anode and cathode change. a solid appears directly beneath the anode. the colour of the coper sulfate solution does not change. explain all three reasons

When can a hypothesis be elevated to the status of a theory? a) when it is validated by an experiment b) when data gathered from an experiment precisely fits predictions c) when it can be proved to be true d) when it meets the test of repeated experimentation