8th standard chemistry question Relating with the movement of particles
. Explain?
Answers
The matter is anything which occupies space and has mass. Matter can be perceived by our senses. Matter contains particles such as atoms, ions or molecules. The matter has three states, namely solid, liquid and gaseous. This division is based on the differences in physical properties such as mass, volume, shape, rigidity, density and arrangement of particles.
The kinetic theory of matter states that all matter:
Is composed of particles.
Have intermolecular spaces between them.
Attract each other with force.
Solid, Liquid And Gas
Solid: Strong force of attraction between the particles. The particles are tightly packed in solids.
Liquid: The force of attraction between the particles in a liquid is strong enough to hold the particles together but not that strong enough to hold the particles in a fixed position. The particles in a liquid are not as tightly packed like that in solids.
Gas: Negligible force of attraction between the particles. The particles move freely in all directions in gas.