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NCERT matter in our surroundings, first chapter. For anyone that's needs a brief of the chapter and wants to revise. It has almost every important points.
Diffusion
The intermixing of particles of two different kinds of matter
Cohesion
The force of attraction between particles of the same substances
Intermolecular force
The force of attraction between particles of same substances
In which state of matter is force of attraction between particles the greatest?
Solid
Why are particles of matter continuously moving?
Due to kinetic energy
Note 
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