Provide descriptions of experiments that can be used to observe this phenomenon. Brownian motion

Provide descriptions of experiments that can be used to observe this phenomenon.
Brownian motion:
Diffusion of gaseous substances:
Diffusion of ionic substances:

Brownian motion:
1) place the obtained preparation of a drop of a solution of watercolor paint under a microscope;
2) observe the movement of particles;
Diffusion of gaseous substances:
1) spray aerosol agent upwards within 2s;
2) determine the time after which you will smell the deodorant;
3) calculate the velocity of propagation of the gaseous substance.
Diffusion of ionic substances:
1) put a few crystals of potassium permanganate in a glass of water;
2) observe clearly visible raspberry stains;
3) observe after a short time how the color of the solution becomes completely uniform.