explain the thermal expansion of solid on the basis of molecular motion .
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explain the thermal expansion of solid on the basis of molecular motion .
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Answer:
Thermal expansion occurs when an object expands and becomes larger due to a change in the object's temperature.
When a substance is heated the average kinetic energy of molecules increases and they start moving with an increased speed.As a result between mean separation between the molecules also increases. thus there is a increase in the length area and volume of the substance.
Answer:
Explanation:
Answer:
Thermal expansion occurs when an object expands and becomes larger due to a change in the object's temperature.
When a substance is heated the average kinetic energy of molecules increases and they start moving with an increased speed.As a result between mean separation between the molecules also increases. thus there is a increase in the length area and volume of the substance.