The change in the arrangement of particles as heat energy and temperature increase because of the increase in the kinetic energy of the particles.
Kinetic energy of any atom is calculated as:
K.E. = 1/2(mv²), where
v = velocity and m = mass
So, when we apply heat energy or increase the temperature of any system then the energy of the constitute particles is also increases which results in the increase of the average kinetic energy of the particle. Due to this kinetic energy particle will move with high velocity and disturbs the arrangement of the system.
Hence, due to increase in average kinetic energy, arrangement of the particles changes.
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