Iron sulfide (FeS2) physical properties:
- density: cca. 4,9 g/cm3
- Mohs hardness: 6-6,5
- paramagnetic
- insoluble in water
Melting is a physical change of iron.
Melting an iron rod is a physical change
Preparation of pure iron from iron ores involve physical changes but also chemical changes.
Physical
Hammering hot iron into a sheet is a physical change. The process involves changing the shape and size of the iron without altering its chemical composition. The atoms in the iron remain the same, only the physical properties are altered.
Physical, no chemical reaction is occuring, your just covering the Iron with paint, the paint doesn't react with the iron.
Yes, magnetizing iron is a physical change because it does not alter the chemical composition of the iron. When iron is magnetized, its magnetic domains align to create a magnetic field, but the iron itself remains unchanged chemically.
Melting iron is a strictly physical change (change of state). The molten and solid iron would be identical by any chemical test or reaction.
physical or chemical
physical or chemical
Yes. Both, solid and liquid iron, are still iron.
Yes, iron is a ferromagnetic metal.