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Inter-conversion of States

On heating, s...

Question

On heating, solid first change to …………………… state and then to…………………… state.

A

liquid

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B

gaseous

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Solution

States of matter can be changed from one form to another by
a. Changing temperature.
b. Applying pressure.
By increasing temperature, solids particles gain energy and vibrate vigorously. This allows the particle to move faster and intermolecular spaces also increase and change to a liquid state.
Again, on increasing temperature, the liquid particles move faster and change to the gaseous state.
Therefore, on heating, the solid first changes to a liquid state and then to a gaseous state.

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