Physics – 2.1.2 Particle model | e-Consult

The random motion of particles in a suspension is evidence for the kinetic particle model of matter because the kinetic particle model states that all matter is made up of particles that are in constant, random motion. The observed movement of the particles directly supports this model by demonstrating that these particles are not stationary but are continuously moving. The random nature of the motion indicates that the particles are colliding with each other and the container walls, resulting in their erratic paths.

The speed of the particles is directly related to the temperature of the liquid. As the temperature increases, the average kinetic energy of the particles increases. This increased kinetic energy causes the particles to move faster, resulting in a more vigorous and rapid random motion. Conversely, as the temperature decreases, the particles move slower.