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Yes. Iron is a ferromagnet and when external magnetic field is removed from iron, small amount of magnetisation is left behind.
Physical.
Physical one.
Color is a physical change always.
It is not a chemical change. The iron and sand can be separated out.
Yes!!! Thermal decomposition. Filtration Magnetisation (iron) Evaporation. All are physical processes.
Melting is a physical change of iron.
Melting an iron rod is a physical change
Melting iron is a strictly physical change (change of state). The molten and solid iron would be identical by any chemical test or reaction.
Iron is a chemical element, not a "change" !
Iron is a chemical element, not a "change".
Yes. Iron is a ferromagnet and when external magnetic field is removed from iron, small amount of magnetisation is left behind.
physical
Physical change
When it combines with Oxygen. Commonly called Rust.
The process of iron rusting is a chemical change.
Heating is a physical change.