It's not the rusty bike it's the rusting of the bike. rust forms in a process called oxidation, or when iron comes in contact with oxygen. Also one reason you can tell it's a chemical change is when you can't reverse the process. Or when it involves changing the chemical compound.
A bicycle rusting is a chemical change, a type of chemical change is the ability to rust therefore the bike rusting makes the change a chemical change :D
Rusting is a chemical change as iron combines with oxygen to form a new substance, iron oxide, otherwise known as rust.
Rusting on a bicycle is considered to be a chemical change. Rusting on a bicycle is not considered to be a physical change.
Yes.
If the car is not properly coated with paint, electroplated or galvanized, it will rust when it comes in contact with moisture in the atmosphere.
yes! because once it gets rusted it will never change back
This would be a chemical change as a rusting bike is really going through oxidation, a chemical reaction between oxygen and the materials in the bike.
physical change
a rusty bike is a chemical change
Yes
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
A nail rusting is a chemical change.
Rusting is a chemical change.
no its chemical. physical changes is where the object chemical matter is not altered. ex- cuting a piece of paper is physical because you still have a piece of paper but burning the paper is chemical because a chemical change has taken place.
Rusting is the oxidation of a metal and is an example of a chemical change.
it is a chemical change