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Please answer fast to help me han oen„ (d) Clavanisalion What do you mean by Rusting of iron? Haw can you prevent rusting?

changes that occur in physical components of a substance is a physical change.
changes that occur in chemical properties of a substance is a chemical change.
rusting of iron is a chemical change, we can prevent it by avoiding to leave it in sun and moisture.
 
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Physical changes: Changes that affect a chemical substance, but not its chemical properties is called a physical change.
Chemical changes: Changes that affect a chemical substance by changing its chemical properties is called a chemical change.  
Crystallization: Crystallisation is the process by which a solid form, where the atoms or molecules are highly organized into a structure known as a crystallization.
Galvanization: The process of applying a coat of zinc on top of a metal to stop it from rusting is known as galvanization.
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all ans are correct
 
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