Monday, 6 April 2020

What is Kinetic Theory of Matter? - CBSE Class 9 - Chemistry - Matter In Surroundings (#eduvictors) (#cbseClass9Science)

What is Kinetic Theory of Matter?

CBSE Class 9 - Chemistry - Matter In Surroundings 

What is Kinetic Theory of Matter?  - CBSE Class 9 - Chemistry - Matter In Surroundings (#eduvictors) (#cbseClass9Science)


What is Kinetic Theory of Matter? 

The Kinetic Theory of Matter states that matter is composed of a large number of small particles —individual atoms or molecules — that are in constant motion. This theory is also called the Kinetic-Molecular Theory of Matter and the Kinetic Theory of Gases.


The main postulates of kinetic Theory of matter are following:



(i) Matter consists of molecules. These are the smallest particles, which are capable of free existence and retain all the chemical properties of the parent substance.

(ii) The molecules are always in a state of random continuous motion.

(iii) The molecules exert forces on one another. These forces depend upon intermolecular distance

(iv) All collision between the particles of matter are perfectly elastic.


Diffusion: 
The kinetic theory of matter is also shown by the process of diffusion. Diffusion is the movement of particles from a high concentration to a low concentration region.

For example, if we put a drop of ink in a beaker filled with water, the ink colour spreads out through the water.

If matter is not made up of extremely small particles, then we would simply see a clump of colour. Since matter consists of millions of very small sized particles, they intermix(diffuse) into water particles.


☞See Also:
Ch 1 - Matter in Our Surroundings (Q & A)
Ch 1 - Matter in our Surroundings (Questions asked in CBSE papers - Unsolved)
Ch1 - Matter in our Surroundings (Unit Objective Test)
Ch1 - Matter in Our Surroundings (MCQs-1)
Ch1 - Matter In Our Surroundings (Question Bank)
Ch1 - Matter In Our Surroundings (Unit Test Paper)
Ch1 - Matter in Our Surroundings (MCQs-2)
Ch1 - Matter in Our Surroundings (Reasoning Questions)
Ch1 - Matter in Our Surroundings (Revision Assignment)
Ch1 - Matter in Our Surroundings (Revision Assignment-2)
Ch1 - Matter in Our Surroundings (Short Q & A)

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