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The rusting of an iron object is called
  • a)
    Corrosion and it is a chemical change
  • b)
    Corrosion and it is a physical as well as chemical change
  • c)
    Dissolution and it is a chemical change
  • d)
    Dissolution and it is a physical change
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The rusting of an iron object is calleda)Corrosion and it is a chemic...
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.
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Community Answer
The rusting of an iron object is calleda)Corrosion and it is a chemic...
Understanding Rusting
Rusting is a common phenomenon that affects iron and its alloys, leading to deterioration and loss of material integrity.
What is Corrosion?
- Corrosion refers to the gradual destruction of materials, usually metals, due to chemical reactions with their environment.
- In the case of iron, corrosion primarily occurs when it reacts with oxygen and moisture, leading to the formation of iron oxides, commonly known as rust.
Rusting as a Chemical Change
- Rusting is classified as a chemical change because it results in the formation of new substances.
- When iron reacts with oxygen and water, it forms rust (Fe2O3·nH2O), which is chemically different from the original iron.
- This transformation cannot be reversed by simple physical means; instead, it requires specific chemical processes for restoration.
Why Not Physical Change?
- A physical change involves alterations in the physical properties of a substance without changing its chemical composition, such as melting, freezing, or dissolving.
- Since rusting alters the chemical structure of iron, it cannot be categorized as a physical change.
Conclusion
- Therefore, the correct answer is option 'A': Corrosion and it is a chemical change.
- Understanding rusting as a chemical change is crucial for implementing effective prevention strategies, such as coatings and galvanization, to protect iron from environmental degradation.
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The rusting of an iron object is calleda)Corrosion and it is a chemical changeb)Corrosion and it is a physical as well as chemical changec)Dissolution and it is a chemical changed)Dissolution and it is a physical changeCorrect answer is option 'A'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about The rusting of an iron object is calleda)Corrosion and it is a chemical changeb)Corrosion and it is a physical as well as chemical changec)Dissolution and it is a chemical changed)Dissolution and it is a physical changeCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The rusting of an iron object is calleda)Corrosion and it is a chemical changeb)Corrosion and it is a physical as well as chemical changec)Dissolution and it is a chemical changed)Dissolution and it is a physical changeCorrect answer is option 'A'. Can you explain this answer?.
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