What happens to the kinetic energy of the particles of a solid when heat is supplied to the solid at its melting point.

The kinetic energy of the particles remains constant

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The kinetic energy of the particles decreases

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The kinetic energy of the particles increases

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None of these

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Solution

The correct option is C
The kinetic energy of the particles increases

solid ---- A substance that has fix volume and fixed shape & size
They possess high inter-molecular forces
They have low intermolecular spaces
For example — sugar, table, salt, etc
Melting point — It is defined as the temperature at which the solids change into a liquid state
An explanation for the correct option
When the solid molecules are heated, they absorb energy due to which their kinetic energy increases
At melting point particles of solid start moving in random motion
An explanation for the incorrect option
The kinetic energy of the particles in solid remains constant, but when it gets energy equal to its melting point kinetic energy is increases
Generally, there is a decrease in kinetic energy when solid particles get energy equal to their melting point
Thus, the option C is correct I:e The kinetic energy of the particles increases

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Similar questions

What happens to the kinetic energy of particles when heat energy equal to latent heat of fusion is supplied to a solid at its M.P ? Explain .

what happens to the kinetic energy of particle when heat energy equivalent to latent heat of fusion is supplied to a solid at it's m.pt. explain

It has been observed that temperature remains constant till all solid melts into liquid. The heat supplied is used for changing a solid state into its liquid state by overcoming the particle-particle attraction force. The solid substance absorbs heat energy without showing any rise in temperature. This heat energy is called latent heat. The amount of heat required to convert a unit mass of a solid into its liquid state, without a change in temperature (i.e. at its melting point) is called the latent heat of fusion.EXPLAIN

Q. The temperature of the substance remains constant when it is melting and boiling though some quantity of heat is supplied. What happens to this energy?

A given substance of mass 'm' is in solid state at certain temperature. Arrange the following steps in proper sequence to calcualte the total heat energy required to just convert the substance completely into gaseous state.

(a). Note down the specific latent heat of vaporization of the substance and calculate the heat supplied to convert from liquid to gaseous state using the formula.

(b) Note down the melting point of the substance and calculate the heat supplied to increase the temperature of the solid to its melting point.

(c) Note down the boiling point of the substance and calculate the heat supplied to increase the temperature of the substance from melting point to its boiling point.

(d). Add all the heat energies, it gives the resultant hea supplied to the solid to just convert it into gaseous state.

(e) Note down the specific latent heat of fusion of the substance and calculate the heat supplied to convert the substance from solid state to liquid state.

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