Question

state whether rusting of iron is a physical or chemical change, How can you prevent rusting of iron? ​

Answer 1

Answer:The rusting of iron is a chemical change because it is two substances reacting together to make a new substance. When iron rusts, iron molecules react with oxygen molecules to make a compound called iron oxide. Rusting would only be a physical change if iron molecules remained pure iron throughout the process.

1.Rusting of iron can be prevented by applying grease or oil. When some grease or oil is applied to the surface of an iron object, then air and moisture cannot come in contact with it and hence rusting is prevented.

Answer 2

Answer:

Rusting of iron is a chemical change. it can be prevented by:

•painting the surface.

•avoid contact with water or moisture

•oil the surface properly.

•galvanisation- Galvanisation is the process of applying a protective zinc coating to iron, to prevent rusting.

Hope it helps you!!

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