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ICSE Class 8 Answered

Basis of kinetic theory of matter

change of liquid in to solid

Asked by ay014500 | 24 Jul, 2020, 10:17: AM
Expert Answer

On the basis of kinetic theory –

 Intermolecular space

  • In solids, the space between the particles is very less.
  • In liquids, the space between the particles is slightly more as compared to solids but still very less. 
            The particles of liquid can slip and slide over each other.
  • In gases, the particles are much farther apart from one another as compared to solids and liquids.
            They have a very disorderly arrangement of particles compared to solids and liquids.
 
 Force of attraction
  • The force of attraction between the particles is strong. Thus, particles in a solid are closely packed.

           The force of attraction between the particles is strong enough to hold the particles together but

            not strong enough to hold the particles in a fixed position.

  • Thus, particles in a liquid are not as closely packed as in solids.
  • The force of attraction between the particles is negligible; hence, particles of a gas move freely in all directions.
  • Gases can thus mix or diffuse into other gases.

Movement

  • Solid particles vibrate only about their mean position.
  • Liquid particles are free to move around in the liquid only. They can slip and slide over each other.
  • Gaseous particles move with high speed in all directions and can exert pressure on the walls of the container.

Answered by Ramandeep | 24 Jul, 2020, 07:24: PM

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