*(d) Impure copper can be purified using electrolysis. In this electrolysis
• the anode is made of impure copper
• the cathode is made from pure copper
• the electrolyte is copper sulfate solution.
The apparatus at the start of the experiment is shown in Figure 7.

During the electrolysis three observations are made

• the sizes of both the anode and the cathode change

• a solid appears directly beneath the anode

• the colour of the copper sulfate solution does not change.
Explain all three observations.

i will give u brainliest if u get it right