Wich uses of iron are due to its chemical properties? Select two options

Iron is used to make alloy steel side carbon steel’s with additives such as nickel, chromium, vanadium, and manganese.
These are used to make bridges, electricity pylons, bicycle chains, cutting tools, and rifle barrels

You should never redesign your experiment. try and see what in your experiment you made a mistake on or try and test your experimemt with somebody else. see if they get the right results.