Cteaning a Rusty Tool using Electrolysis Rusty iron tools can be restored to their original form in a simple electrolytic cell. Connect the tool to the negative side of a power source, connect a bar of iron to the positive side and then put them both in a bucket of water. After several hours the toot should look shiny and new white the bar should be noticeably smaller and covered in rust. Match four of the numbers in the diagram above with the descriptions below. The direction of cation flow (Record first) The direction of electron flow (Record second) The site where reduction occurs (Record third) The site where electrons are lost (Record fourth)