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What does the process of heating a metal rim to fit onto a wooden wheel demonstrate?
- a)Reversible change
- b)Irreversible change
- c)Chemical reaction
- d)Physical wear and tear
Correct answer is option 'A'. Can you explain this answer?
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What does the process of heating a metal rim to fit onto a wooden whee...
Heating the metal rim to fit onto a wooden wheel demonstrates a reversible change. The metal expands when heated and contracts back to its original size when cooled. This process is used in many practical applications to fit metal parts securely.
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What does the process of heating a metal rim to fit onto a wooden whee...
Understanding the Process of Heating a Metal Rim
The process of heating a metal rim to fit onto a wooden wheel is a classic example of a reversible change in physical science. Here’s why:
What is a Reversible Change?
- A reversible change is a transformation that can be undone or reversed.
- In this type of change, the original material can be recovered by reversing the process.
Heating the Metal Rim
- When the metal rim is heated, it expands due to increased kinetic energy of the particles.
- This expansion allows the rim to fit over the wooden wheel easily.
Cooling and Returning to Original State
- Once the rim is placed on the wheel, it is allowed to cool down.
- As it cools, the metal contracts back to its original size, firmly fitting onto the wheel.
Why Not Irreversible Changes?
- An irreversible change would involve a transformation that cannot be reverted to the original state, such as burning wood.
- In this case, the metal rim can be expanded and contracted without altering its chemical composition.
Conclusion
- The heating of the metal rim demonstrates a reversible change.
- This process showcases the physical properties of materials and their ability to return to their initial form upon cooling.
Understanding these concepts is crucial for grasping the fundamentals of physical changes in materials, particularly in engineering and manufacturing contexts.
The process of heating a metal rim to fit onto a wooden wheel is a classic example of a reversible change in physical science. Here’s why:
What is a Reversible Change?
- A reversible change is a transformation that can be undone or reversed.
- In this type of change, the original material can be recovered by reversing the process.
Heating the Metal Rim
- When the metal rim is heated, it expands due to increased kinetic energy of the particles.
- This expansion allows the rim to fit over the wooden wheel easily.
Cooling and Returning to Original State
- Once the rim is placed on the wheel, it is allowed to cool down.
- As it cools, the metal contracts back to its original size, firmly fitting onto the wheel.
Why Not Irreversible Changes?
- An irreversible change would involve a transformation that cannot be reverted to the original state, such as burning wood.
- In this case, the metal rim can be expanded and contracted without altering its chemical composition.
Conclusion
- The heating of the metal rim demonstrates a reversible change.
- This process showcases the physical properties of materials and their ability to return to their initial form upon cooling.
Understanding these concepts is crucial for grasping the fundamentals of physical changes in materials, particularly in engineering and manufacturing contexts.
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What does the process of heating a metal rim to fit onto a wooden wheel demonstrate?a)Reversible changeb)Irreversible changec)Chemical reactiond)Physical wear and tearCorrect answer is option 'A'. Can you explain this answer?
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