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The steel of your bike contains iron, which becomes iron oxide [which is rust]. It has reacted with oxygen in the air. Water in the air makes this happen more easily which is why you should keep your bike dry, or at least keep your bike painted well so that the iron/steel doesn't come in contact with air. The iron and oxygen were separate at the beginning, and are bonded together into a new substance at the end, so that tells us that this is a chemical change.
A physical change is one where no new substance is made, but the substances we already had get reorganised. For example. when water boils, the steam is still the same molecule, water, just reorganised.
What else can I help you with?
Is a rusting bicycle a chemica or physical change?
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.
Why is a car rusting a physical 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.
Is rusting a a screw is a physical or chemical change?
Rusting of a screw is a chemical change. It involves a chemical reaction between the iron in the screw and oxygen in the air to form iron oxide (rust).
Is the tendency of iron to rust physical or chemical?
Examples: Iron Rusting: CHEMICAL CHANGE The ABILITY for Iron to rust: Chemical PROPERTY Ice freezing: Physical CHANGE Water's ABILITY to evaporate: Physical PROPERTY
Rusting iron is it physical or chemical change?
Rusting iron is a chemical change because it involves a chemical reaction between iron, oxygen, and water to form iron oxide (rust). This process cannot be easily reversed by physical means.
Is a rusting bicycle a physical change or a chemical change?
physical change
Is a rusting bicycle a chemical changes or a physical change?
physical change
Is bleaching your hair Is a rusting bicycle a physical or chemical change?
first physical, second chemical
Is rusting a bicycle a chemical or physical change?
Rust (oxidation of metal) is a chemical change but it is also a physical change in the strength of the material.
Is a rusting bicycle a chemical or physical?
Rust (oxidation of metal) is a chemical change but it is also a physical change in the strength of the material.
Is there a chemical or physical change when a bicycle rusts in the rain?
Rusting is a chemical change, as steel/iron turns into iron oxide.
Is a rusting bicycle is a physical change?
no
Is a rusting bicycle a physical or chemical change?
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.
Is a rusting bicycle a chemica or physical change?
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.
Is a nail rusting a physical or chemical?
A nail rusting is a chemical change.
Is rusting wheels of a bike chemical or physical?
Rusting is a chemical change.
Is rusting an example of physical or chemical change?
Rusting is the oxidation of a metal and is an example of a chemical change.
