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Question

How will you justify that particlesof matter are very small, have space between them, are countiniously moving and attract each other. Describe activities to show these characteristics?

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Solution

Particle of matter are small and space is there between particlesTake a beaker filled with water. Add some sugar and now see the mark. We see the marking of water in a beaker increases. Keep tirring the solution and now the level of water comes down to the original level.As the tiny particles moves in the space this happens. This shows matter is made up of tiny paricles and there is space between the particles.Movement of particles When we spread perfume tiny particles of air collide with perfume and the perfume particles spreadin the air. Thus the smell of perfume is sensed. This shows that the particle of matter are moving randomly.Force of attractionDue to the force of attraction only air particles move freeely and liquid has medium and solid have strong intermolecular force of attraction. We can move our hand freely in gase, wehreas some force is needed in liquidand never in solid.

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Characteristics of Particles of Matter
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