Activity: Diffusion in Air
Material: Bottle of perfume.
Method:
Close all the doors and windows of the classroom
Open a perfume in one corner of the classroom whiles another student stands in the other corner.
State your observation when it was opened.
The other student in the other corner should also say what he/she experienced after 10 minutes.
The perfume will spread to every region. Everybody in the classroom irrespective of where you are, will smell the perfume after some minutes.