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

•what conclusions can you make about the relationship between the volume of a gas and its temperature? • what conclusions can you make about the relationship between the volume of a gas and its pressure? • what possible variables have you not accounted for? as you did the procedures, is it possible that the atmospheric pressure may have changed? if it did change over the course of your experiment, then how would your results have been affected?