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Rusted iron does not always have the same chemical composition. The rust itself always contain both iron and oxygen, but the proportions between these two elements can vary considerably. If there is plenty of oxygen and time, the rust itself approaches the composition of pure ferric oxide, with formula Fe2O3. Unless the original iron was very thin, however, some un-rusted iron always remains, so that the total composition of the rusted iron overall is still uncertain, unless measured for a particular sample.
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Why is the mass of a rusted nail greater than the mass of the nail before it rusted?
When a nail rusts, it undergoes a chemical reaction with oxygen in the air to form iron oxide (rust). This process adds additional mass to the nail in the form of the iron oxide. Therefore, the mass of the rusted nail is greater than the mass of the nail before it rusted.
Is rust an example of a chemical change?
No, rusting is a chemical reaction in which iron reacts with oxygen in the presence of water to form iron oxide. This process is an example of a chemical change where the substance's chemical composition is altered.
Is rusting of an iron pan a chemical or physical reaction?
The rusting of an iron pan is a chemical reaction. It occurs when the iron in the pan reacts with oxygen and moisture in the air to form iron oxide, which gives the pan a reddish-brown appearance. This process is not easily reversible and involves a change in the chemical composition of the iron.
Are a frozen pipe or a rusted metal bike a chemical energy?
A frozen pipe is a physical change, as it is just water changing state from liquid to solid (ice). However, a rusted metal bike is a chemical reaction as it is caused by the metal reacting with the oxygen in the air, in what is called an oxidation reaction.
Is rusted pots and pans a physical change?
Yes, rusted pots and pans are a result of a chemical change. This occurs when the metal reacts with oxygen and water to form iron oxide (rust), which is a different substance than the original metal.
Is rusted iron physical change?
no it is a chemical change
Is rusted iron a chemical or physical change?
Rust, scientifically known as oxidation, is a chemical change.
What is chemical composition of iron?
Iron is made out of Fe atoms.
Why is the mass of a rusted nail greater than the mass of the nail before it rusted?
When a nail rusts, it undergoes a chemical reaction with oxygen in the air to form iron oxide (rust). This process adds additional mass to the nail in the form of the iron oxide. Therefore, the mass of the rusted nail is greater than the mass of the nail before it rusted.
What does the inside of a rusted out cast iron sewer pipe look like?
Rusted cast iron.
What is the Chemical Composition of Specularite?
Specularite is a variety of hematite (iron oxide) that contains a high percentage of metallic iron. Its chemical composition is typically Fe2O3 with impurities such as aluminum, manganese, and silica.
Why is a rusted nail chemical change not physical change?
Because the Iron in the nail is no longer just iron but oxidation plus iron, a physical change to the nail would be to cut it in-half.
Which one is a chemical change rusting of iron or melting of iron?
Rusting of iron is a chemical change because it involves a reaction with oxygen to form iron oxide. Melting of iron is a physical change because it does not involve a change in the chemical composition of the iron.
Rusting iron physical change?
No. Rusting is a chemical change because the chemical composition is changed from iron to iron oxide. The iron reacts with oxygen in the atmosphere, forming iron oxide. Fe + O2 --> Fe2O3
What is the nature of iron rusted?
Rust on iron is a hydrated iron oxide.
Is rusting of iron a physical or chemical change?
Rusting of iron is a chemical change. It occurs when iron reacts with oxygen and water in the presence of moisture, forming iron oxide (rust). This process involves a chemical reaction that changes the chemical composition of the iron.
Is rusted iron a mixture?
yes
