Hardness of Solid Substances - Grinding Iron
Iron metal is not easily ground or crushed.
iron
Paramagnetism: Compounds - Iron(II) Sulfate Pentahydrate
Iron(II) sulfate pentahydrate,FeSO4·5H2O, eventually swings toward a magnet.
Paramagnetism: Compounds - Potassium Hexacyanoferrate(II)
A sample of potassium hexacyanoferrate(II),K4Fe(CN)6, is shown to be diamagnetic.
Reaction of iron with iodine
Powdered iron and powdered iodine are mixed together. Adding drops of water to the mixture initiates a reaction.