Q. 1


Make a model to demonstrate any characteristic property of particles in a solid, liquid and gas.

Answer :

Model described below describes one of the important characteristics of the particles in a solid, liquid and gas.

Steps :

a) Take a beaker filled with more than half of water.

b) Put some copper sulphate at the bottom of the beaker.

c) Keep it for some time.

Observation :

After few minutes, we notice that whole solution turned blue.

Reason :

Initially, copper sulphate was placed at the bottom of the beaker. Particles of the copper sulphate start moving randomly in all direction and collide with the water particles since water particles are colourless and copper sulphate is blue in color so the particles of the copper sulphate imparts blue color to the whole solution.


Particles of solid, liquid and gas are constantly moving.

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