It is a chemical change. In most cases molecular oxygen combines with the metal to form a rust.
When the term 'metal rusting' is used, one usually refers to the oxidization of iron. Because there is also an oxygen atom attached to the iron atoms, it is a chemical change. The orange color is the byproduct of the attachment of oxygen.
Chemical change is any change that results in the formation of new chemical substances. At the molecular level, chemical change involves making or breaking of bonds between atoms. These changes are chemical:
metal rusting
gasoline burning (water vapor and carbon dioxide form)
eggs cooking (fluid protein molecules uncoil and crosslink to form a network)
bread rising (yeast converts carbohydrates into carbon dioxide gas)
milk souring (sour-tasting lactic acid is produced)
suntanning (vitamin D and melanin is produced)
Physical change rearranges molecules but doesn't affect their internal structures. Some examples of physical change are:
whipping egg whites (air is forced into the fluid, but no new substance is produced)
magnetizing a compass needle (there is realignment of groups ("domains") of iron atoms, but no real change within the iron atoms themselves).
boiling water (water molecules are forced away from each other when the liquid changes to vapor, but the molecules are still H2O.)
dissolving sugar in water (sugar molecules are dispersed within the water, but the individual sugar molecules are unchanged.)
dicing potatoes (cutting usually separates molecules without changing them.)
Classification of real processes can be tricky. Complex changes can be broken down into many simpler steps. Some of the steps are chemical and others are physical, so the overall process can't cleanly be placed in either category. For example, boiling coffee involves chemical change (the delicate molecules that give coffee its flavor react with air and become new, bitter-tasting substances) and physical change (the water in the coffee is going from liquid to gaseous form).
It is a chemical change. In most cases molecular oxygen combines with the metal to form a rust.
Metal rusting is a chemical change.
Chemical change.
Rust its self is a chemical change, but a chemical property for a car would be that it gets rusty over time.
Rust (oxidation of metal) is a chemical change but it is also a physical change in the strength of the material.
The rusting of a metal chair is a chemical change. The iron is undergoing oxidation as it combines with oxygen to form iron oxide.
melting any metal is physical. rusting iron is chemical
The rusting of Iron is a chemical change as Iron reacts with Oxygen to form Iron Oxide [Rust]
Metal rusting (corrosion) is a chemical change.
Rusting is the oxidation of a metal and is an example of a chemical change.
Rusting is a chemical change because the metal is reacting with air and changing into a new substance.
I don't think it is. It's a chemical change.
Rust its self is a chemical change, but a chemical property for a car would be that it gets rusty over time.
Rust (oxidation of metal) is a chemical change but it is also a physical change in the strength of the material.
Rust (oxidation of metal) is a chemical change but it is also a physical change in the strength of the material.
A nail rusting is a chemical change. The chemical formula of the metal completely changes, adding oxygen to the formula. Iron changes from Fe to FeO2 , or to Fe2O3
no rusting iron is not a physical change it is a chemical change
The rusting of a metal chair is a chemical change. The iron is undergoing oxidation as it combines with oxygen to form iron oxide.
The rusting of metal is a chemical change and not a physical change. This is because iron and water react to form a compound called iron oxide.
melting any metal is physical. rusting iron is chemical