We can use: - mechanical polishing - chemical polishing
Physical change
No, it is a chemical change. The metal oxide formed is a new substance.
Physical Change, the metal has the same chemical structure and only the shape of the bar has changed
Yes, polishing is a physical change because it changes only the appearance of the material by smoothing its surface through abrasion, without altering its chemical composition.
Polishing is a physical change because it does not alter the chemical composition of the material being polished. It simply changes its appearance by smoothing its surface.
Denting a piece of metal is a physical change, not a chemical change. This is because the composition and properties of the metal remain the same even though its shape has been altered.
We can use: - mechanical polishing - chemical polishing
Physical change
Hammering copper metal is a physical change because it alters the shape and appearance of the metal without changing its chemical composition.
Examples; melting, boiling, sublimation, grinding, polishing, extruding, pressing, etc.
Corrosion is a chemical change
Metal rusting (corrosion) is a chemical change.
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.
yhe answer is the gallium is have nothing change thats why it is physical change
This would be a physical change because there is no change in the chemical make up of the metal and there is no creation of new substances there is simply a change in state for the metal.
The formation of a silver metallic color on sodium metal is a physical change. This change is due to the reflection of light by the metal's surface, and the silver color is a property change and does not involve a change in the chemical composition of the sodium metal.