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Question
When a solid changes into a liquid, which of the following quantities do not change?
When a solid changes into a liquid, which of the following quantities do not change?
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Solution
The correct options are
A Temperature
B Average kinetic energy
When the solid changes into a liquid, there is no change in its temperature. So, the average kinetic energy of the molecules does not change. However, the distance between the molecules on an average increases due to the weakening of intermolecular bonds. This increase in its average distance is accompanied by the increase in volume of the substance.
A Temperature
B Average kinetic energy
When the solid changes into a liquid, there is no change in its temperature. So, the average kinetic energy of the molecules does not change. However, the distance between the molecules on an average increases due to the weakening of intermolecular bonds. This increase in its average distance is accompanied by the increase in volume of the substance.
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