Physical. The properties of the metal do not change, and it can be undented.
Denting is a physical change.
Yes. It is a reaction between the metal and oxygen.
It is a physical change because you are changing the shape of the metal.
A metal Surface being ground is a physical change, not a chemical change.
physical- only its appearance has changed.
Sanding rust off of a metal is a physical change. You are changing the rust's location, but not its chemical structure.
Physical change
Corrosion is a chemical change
Physical Change, the metal has the same chemical structure and only the shape of the bar has changed
No, it is a chemical change. The metal oxide formed is a new substance.
chemical change
Vaporization is a physical change.
Yes. It is a reaction between the metal and oxygen.
It is a physical change because you are changing the shape of the metal.
Of itself a metal can not be "shortened". However, a metal OBJECT such as a piece of metal wire can be shortened by cutting a piece off. This would be a physical change.
Metal rusting (corrosion) is a chemical change.
chemical
A metal Surface being ground is a physical change, not a chemical change.