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Is rusting a metal physical change?
Metal rusting (corrosion) is a chemical change.
Is bending a metal wire a chemial or phyiscal change?
Physical. The metal wire is still a metal wire after the change.
Is shortening metal a physical or 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.
Is a metal surface being ground a chemical change?
Grinding a metal surface is a physical change, not a chemical change. The metal is being physically altered in shape and size, but its chemical composition remains the same.
Is metal cooled and taken out of a mold a physical or chemical 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.
Is denting a piece of metal a physical or chemical change?
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.
Is a silver metallic color of sodium metal a physical or chemical change?
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.
How does the density of the metal in the crushed can compare with the density of the metal before the can was crushed?
The density of the metal in the crushed can remains the same as the density of the metal before it was crushed. Density is an intrinsic property of a material that does not change with physical alterations like crushing. So, the density of the metal in the can will not change due to the crushing process.
Is cutting a bar of sodium metal with a knife a chemical change?
Yes, cutting a bar of sodium metal with a knife is a physical change, not a chemical change. The chemical composition of the sodium metal remains the same before and after cutting. The change is only in the physical state of the metal.
Is hammering copper metal a physical or chemical change?
Hammering copper metal is a physical change because it alters the shape and appearance of the metal without changing its chemical composition.
What is the color change when metal rust?
It depends on what metal is 'rusting'.
Is corroding metal a chemical change?
Yes, corroding metal is a chemical change because it involves a chemical reaction between the metal and substances in its environment, such as oxygen or water. This reaction causes a change in the composition and properties of the metal.
