Question

How does change in temperature results in change of state

Answer 1

suppose you have glass of water (in liquid state) if you place it in a refrigerator it will become ice (in solid state) if you heat it it will become vapour (in gaseous state)

Answer 2

Answer:

Chαngє σf stαtє вч chαngíng thє tєmpєrαturє :

When temperature increases,a solid changes into liquid and then into vapour and when temperature decreases just the reverse happens.

Fσr єхαmplє :

Water is a liquid under ordinary conditions but when it is kept in a refrigerator,it gets cooled and changes into ice at 0°C .Ice when kept at room temperature again changes into it's liquid form.

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In all the three states ,the properties of water remain the same.

When a substance changes from solid to liquid or liquid to vapour,heat energy is evolved.The net energy is almost zero,because change of state does not change the chemical composition of the substance.

Mσrє єхαmplє :

Another example is wax.When you ignite a candle,solid wax melts into liquid wax which rises in the wick.The wax near the glowing wick melts and some part of the molten wax trickles down and solidifies.

In both the above cases,the change of state state of the substance is due to change in temperature.