Question

Discuss an activity to prove that: Particles of matter are continuously moving.

Answer 1

Process which provides the best evidence for the motion of particles in matter are :

1. Brownian Motion 
2. Diffusion.

Aim : To demonstrate the motion of particles move continuously.

Apparatus : Beaker, water and potassium permanganate [KMnO4] crystals.

Procedure :
1. Take a beaker filled with 100ml of water.
2. Slowly add 5gm of KMnO4 crystals to water.
3. Observe the changes

Observations:
Both KMnO4 crystals and water are made up of particles .
The particles of water are colouless and KMnO4 crystals are pink.When KMnO4 are added to water, slowly we can see the water colour changes to pink. Because both water particles and KMnO4 particles move continuously and without stirring they got mixed.

Conclusion : This activity concludes that,Particles of matter move continuously.

Answer 2

Answer:

Explanation:

we can take the example of an incense stick

1. put an unlit incense stick in a corner of your class

2.go close to the incense stick to smell it

3.now light up the stick and try to get the smell from a distance.

OBSERVATION: the smell of unlit incense stick can be observed only by going close to it whereas the smell of lighted stick can be observed from a distance.

CONCLUSION: the particles of matter are continuously moving but the speed of particles is very slow. The speed of particles increases with the increase in temperature

Hope it helped you

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