When melted iron solidifies without any change in temperature, what is happening on the atomic level? A. The iron atoms are gaining kinetic energy. B. The iron atoms are losing kinetic energy. C. The iron atoms are gaining potential energy. D. The iron atoms are losing potential energy.
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Answer: The correct option is C.
Explanation: As the melted iron solidifies, the phase change is happening at constant temperature.
Kinetic energy does not changes as it is dependent on temperature, therefore, there will be no change in kinetic energy.
As the melted iron solidifies, the intermolecular forces of attraction increases between the particles and the intermolecular distance between the particles decreases. For the formation of bond, the energy required is in the form of potential energy and hence, the potential energy increases.
Therefore, the iron atoms will gain potential energy.
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4
Answer:
The correct answer is D
Explanation:
I got it right :)
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