MEDIUM
9th CBSE
IMPORTANT
Earn 100

State two characteristics of matter demonstrated by diffusion. 

Important Questions on Matter in Our Surroundings

MEDIUM
9th CBSE
IMPORTANT
State two characteristics of matter demonstrated by Brownian motion.
MEDIUM
9th CBSE
IMPORTANT
Name the scientist who studied the movement of pollen grains suspended in water through a microscope. What is this phenomenon known as? 
MEDIUM
9th CBSE
IMPORTANT
When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water? 
MEDIUM
9th CBSE
IMPORTANT
When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuse into air.
MEDIUM
9th CBSE
IMPORTANT
Describe in your own words, what happens to the particles when salt dissolves in water.
MEDIUM
9th CBSE
IMPORTANT
Explain why, we can easily move our hand in air but to do the same through a plank of wood, we need a karate expert. 
MEDIUM
9th CBSE
IMPORTANT
Give one example of the diffusion of a solid in another solid. 
MEDIUM
9th CBSE
IMPORTANT
Explain why the diffusion of a solid in another solid is a very slow process.