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When an iron nail is dropped into a beaker containing a solution of copper sulphate, after a while, both the solution and the iron nail change colour. the nail gets a brown coating, and the solution turns green. the nail has a coating of copper on its surface and the solution is detected to have the presence of an irom containing compound. change of colour can indicate both, a chemical or a physical change. which kind of change does this experiment signify and why?
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When an iron nail is dropped into a beaker containing a solution of co...
Introduction:
When an iron nail is dropped into a solution of copper sulphate, both the nail and the solution undergo a change in color. The nail develops a brown coating, while the solution turns green. This experiment signifies a chemical change rather than a physical change.
Chemical Change:
A chemical change involves the formation of new substances with different chemical properties. In this experiment, the interaction between iron and copper sulphate results in the formation of new compounds.
Reaction:
The reaction that takes place between iron and copper sulphate can be represented by the following equation:
Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)
Explanation:
1. Iron Nail: The iron nail gets a brown coating due to the deposition of copper on its surface. This occurs because iron is more reactive than copper and displaces it from the copper sulphate solution. The brown coating on the nail is copper metal.
2. Copper Sulphate Solution: The solution turns green due to the presence of copper ions (Cu2+) in it. Copper sulphate is a blue-colored compound, and when the iron nail displaces copper from the solution, the blue color fades and turns green.
Evidence of Chemical Change:
The experiment demonstrates several characteristics of a chemical change:
1. Color Change: Both the nail and the solution change color, indicating the formation of new substances.
2. Formation of New Compounds: The deposition of copper on the iron nail and the presence of an iron-containing compound in the solution indicate the formation of new compounds.
3. Chemical Reaction: The reaction between iron and copper sulphate is a chemical reaction, as it involves the rearrangement of atoms and the formation of new bonds.
4. Irreversibility: The changes observed in the nail and the solution are not easily reversible. The copper coating on the nail cannot be easily removed, and the copper ions in the solution cannot be easily converted back to copper sulphate.
Conclusion:
Based on the color changes observed in both the nail and the solution, as well as the formation of new compounds, it can be concluded that the experiment signifies a chemical change. The reaction between iron and copper sulphate results in the deposition of copper on the nail and the presence of an iron-containing compound in the solution, indicating the formation of new substances with different chemical properties.
When an iron nail is dropped into a solution of copper sulphate, both the nail and the solution undergo a change in color. The nail develops a brown coating, while the solution turns green. This experiment signifies a chemical change rather than a physical change.
Chemical Change:
A chemical change involves the formation of new substances with different chemical properties. In this experiment, the interaction between iron and copper sulphate results in the formation of new compounds.
Reaction:
The reaction that takes place between iron and copper sulphate can be represented by the following equation:
Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)
Explanation:
1. Iron Nail: The iron nail gets a brown coating due to the deposition of copper on its surface. This occurs because iron is more reactive than copper and displaces it from the copper sulphate solution. The brown coating on the nail is copper metal.
2. Copper Sulphate Solution: The solution turns green due to the presence of copper ions (Cu2+) in it. Copper sulphate is a blue-colored compound, and when the iron nail displaces copper from the solution, the blue color fades and turns green.
Evidence of Chemical Change:
The experiment demonstrates several characteristics of a chemical change:
1. Color Change: Both the nail and the solution change color, indicating the formation of new substances.
2. Formation of New Compounds: The deposition of copper on the iron nail and the presence of an iron-containing compound in the solution indicate the formation of new compounds.
3. Chemical Reaction: The reaction between iron and copper sulphate is a chemical reaction, as it involves the rearrangement of atoms and the formation of new bonds.
4. Irreversibility: The changes observed in the nail and the solution are not easily reversible. The copper coating on the nail cannot be easily removed, and the copper ions in the solution cannot be easily converted back to copper sulphate.
Conclusion:
Based on the color changes observed in both the nail and the solution, as well as the formation of new compounds, it can be concluded that the experiment signifies a chemical change. The reaction between iron and copper sulphate results in the deposition of copper on the nail and the presence of an iron-containing compound in the solution, indicating the formation of new substances with different chemical properties.
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When an iron nail is dropped into a beaker containing a solution of copper sulphate, after a while, both the solution and the iron nail change colour. the nail gets a brown coating, and the solution turns green. the nail has a coating of copper on its surface and the solution is detected to have the presence of an irom containing compound. change of colour can indicate both, a chemical or a physical change. which kind of change does this experiment signify and why?
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When an iron nail is dropped into a beaker containing a solution of copper sulphate, after a while, both the solution and the iron nail change colour. the nail gets a brown coating, and the solution turns green. the nail has a coating of copper on its surface and the solution is detected to have the presence of an irom containing compound. change of colour can indicate both, a chemical or a physical change. which kind of change does this experiment signify and why? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about When an iron nail is dropped into a beaker containing a solution of copper sulphate, after a while, both the solution and the iron nail change colour. the nail gets a brown coating, and the solution turns green. the nail has a coating of copper on its surface and the solution is detected to have the presence of an irom containing compound. change of colour can indicate both, a chemical or a physical change. which kind of change does this experiment signify and why? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When an iron nail is dropped into a beaker containing a solution of copper sulphate, after a while, both the solution and the iron nail change colour. the nail gets a brown coating, and the solution turns green. the nail has a coating of copper on its surface and the solution is detected to have the presence of an irom containing compound. change of colour can indicate both, a chemical or a physical change. which kind of change does this experiment signify and why?.
When an iron nail is dropped into a beaker containing a solution of copper sulphate, after a while, both the solution and the iron nail change colour. the nail gets a brown coating, and the solution turns green. the nail has a coating of copper on its surface and the solution is detected to have the presence of an irom containing compound. change of colour can indicate both, a chemical or a physical change. which kind of change does this experiment signify and why? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about When an iron nail is dropped into a beaker containing a solution of copper sulphate, after a while, both the solution and the iron nail change colour. the nail gets a brown coating, and the solution turns green. the nail has a coating of copper on its surface and the solution is detected to have the presence of an irom containing compound. change of colour can indicate both, a chemical or a physical change. which kind of change does this experiment signify and why? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When an iron nail is dropped into a beaker containing a solution of copper sulphate, after a while, both the solution and the iron nail change colour. the nail gets a brown coating, and the solution turns green. the nail has a coating of copper on its surface and the solution is detected to have the presence of an irom containing compound. change of colour can indicate both, a chemical or a physical change. which kind of change does this experiment signify and why?.
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