Ah, what a lovely question. When a bicycle rusts, it's actually a chemical change taking place. The metal is reacting with oxygen and moisture in the air, creating a new substance called iron oxide. It's all part of nature's way of transforming things, just like how we transform a blank canvas into a beautiful painting.
no rusting iron is not a physical change it is a chemical change
Yes, it is, because the chemical composition of the outside changes due to oxydation.
If by non rusting you mean it is in the same state it was made in then it wouldn't be part of any change. But if something is rusting it would be a chemical change because the metal is changing composition and it is not the same metal it was in the first place.
It is a chemical change. Here oxidation of Iron occurs and being oxidation reaction, it is 'exothermic' reaction.Through it takes prolonged period and it is difficult to observe it, you can deduct it. As 'all' oxidation reactions are 'exothermic'.
A physical change
physical change
physical change
first physical, second chemical
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.
Rusting is a chemical change, as steel/iron turns into iron oxide.
no
Chemical - It's the iron atoms reacting with the oxygen atoms in the air. For future reference, a chemical change is irreversible, whereas a physical change can be reversed, usually quite easily.
A nail rusting is a chemical change.
Rusting is a chemical change.
Rusting is the oxidation of a metal and is an example of a chemical change.
it is a chemical change