Question

Particles of matter are continuously moving . Demonstrate this property of matter giving an activity.

Answer 1

Two 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

Take some water in a container, put a few drops of poster color in it. Before long the poster color will break down and the water will change the shade of the desired color. This demonstrates particles of matter are ceaselessly moving the particles of poster shading color got intermix or diffuse with particles of water. 
Particles of matter are all the ordinary objects that we can find, touch or press are at last made out of atoms. This conventional nuclear matter is, in turn, comprised of cooperating subatomic particles—more often than not a nucleus of protons and neutrons, and a cloud of circling electrons.