When powdered chalk is suspended in water and observed under a microscopethat chalk particlesappear to move in a random wayWhat is the cause of this random motion?

Answer 1

This is an example of Brownian motion. The chalk suspended particles tend to move in the water and thus is big enough to be seen under a microscope. Brownian motion is the visible motion of small pieces of any solid that can be seen under a light microscope

Answer 2

The random motion of chalk particles in water, known as Brownian motion, is caused by collisions with water molecules. These collisions result in random movement of the particles due to the constant, random motion of the water molecules. This phenomenon was first observed and explained by scientist Robert Brown in the early 19th century.