Question

Name two process which provides the best evidence for the motion of particles in matter

Answer 1

The energy for random motion of particles of molecular and atomic level is provided by thermal energy surrounding. The particles absorb the thermal energy and vibrate at very fast rate and also move from one point to another, thereby colliding with particles and transferring energy and momentum to other particle.while in brownian motion the suspended particle like dust are bombarded by the atoms and the molecules of fluid(gas or liqiud)which results in random motion of the dust particle