physical or chemical
physical or chemical
Heating is a physical change.
iron nail
It is a chemical change
physical
Because the Iron in the nail is no longer just iron but oxidation plus iron, a physical change to the nail would be to cut it in-half.
Chemical change, oxygen binds with iron.
A nail rusting is a chemical change. The iron in the nail reacts with water and oxygen to produce rust, a compound with the chemical formula Fe3O2.nH2O.
Corrosion is a chemical process.
chemical change
I am quite sure that rust is a chemical change. Rust is caused when oxygen atoms begin bonding with the iron in the nail, which makes it a compound instead of a pure element.
Chemical. Rust is iron oxide. Oxygen bonds chemically to the iron.