# Diffusion

“The intermixing of particles of two different matter by their own is called Diffusion. “

OR The spreading out and mixing of particles of a matter due to motion of its particles is called Diffusion.

Example of diffusion are perfume,  incense stick,  smell of cocking food,  color drops in water,  alcohol in water,  two ice cube,  oxygen in water.

I) In Solid

In solid state the diffusion is least due to particles of matter closely bound together.

Example:  two ice cube join together by force of sometime.

II) In liquid

In liquid state diffusion of matter is highest due to particles of matter loosely bound together.

Example:  when we add color in water, when we add lemon juice in water, oxygen in water colour drop in water etc.

III) In Gasses

In gasses state diffusion of matter is faster than solid and liquid state due to particles of matter far away from each other.

Example:  perfume,  smell of food, incense stick etc.

Effect of temperature and Pressure on Diffusion

The rate of diffusion become faster with increase in temperature because at higher temperature the particles have more energy and hence move faster.

Example:  incense stick,  smell of food,  perfume etc.

Incense stick

Perfume

Smell of food

“When the temperature increase on matter  then the diffusion also increase because movement of matters particles are faster. When the temperature decrease on matter  then the diffusion also decrease because movement of matters particles are slow. “

When the pressure increase on matter  then the diffusion decrease because movement of matters particles are decrease. When the pressure decrease on matter  then the diffusion increase because movement of matters particles are increase.

1) What is Diffusion?

Answer:  The intermixing particles of two different types of matter by their own is called Diffusion.

2) What is the role of temperatures in diffusion?

Answer:  The rate of diffusion become faster with increase in temperature because at higher temperature the particles have more energy and hence move faster.

3) What are the example of gasses diffusion?

Answer:  incense stick,  smell of food,  perfume etc.

4) What is the role of pressure in diffusion?

Answer:  When the pressure increase on matter  then the diffusion decrease because movement of matters particles are decrease. When the pressure decrease on matter  then the diffusion increase because movement of matters particles increase.