What is meant by 'diffusion'? Give one example of diffusion in gases.
Important Questions on Matter in Our Surroundings
Why do gases diffuse very fast ?
Name two gases of air that dissolve in water by diffusion. What is the importance of this process in nature?
Why does a gas fill a vessel completely ?
Why are gases so easily compressible whereas it is almost impossible to compress a solid or a liquid ?
What is Brownian motion? Draw a diagram to show the movement of a particle (like a pollen grain) during Brownian motion.
In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move ?
Look at the diagram below. Jar A contains a red-brown gas whereas jar B contains a colourless gas. The two gas jars are separated by a glass plate placed between them.
What will happen when the glass plate between the two jars is pulled away ?
