Today is our very first Science lesson and Mdm Riza gave each of us a sheet of note to let us have a better understanding of the chapter, Particulate Model of Matter. This note tells us how the kinetic theory of particles of matter comes about and why matter changes states.
After this lesson, I learnt that all matter is made up of tiny discrete particles. The particles in solid are vibrating in a highly ordered arrangement, the particles in liquid are able to move over short distances in an irregular arrangement and the particles in gas are moving at a very fast speed in extreme disorder.
I also learnt that particles in liquid and gas usually collide with one another and the walls of the containers they are held in. These collisions are perfectly elastic and thus, there is no loss of kinetic energy in the particles. The kinetic energy of the particles changes only when the temperature changes. Hence, we can say that the average kinetic energy of all particles is directly proportional to the absolute temperature. This in turn will cause matters to change states.
Sources: Google Images
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