About Diffusion
The intermixing of two particles is called Diffusion. For example, if we take water and sugar and mix the sugar with water then the sugar crystals will start breaking down and fill the spaces between the particles of water and the sugar crystal will break down till the spaces are not fill and after that, it will fully dissolve with water.
About Kinetic Energy
When the heat is supplied to the particles of matter and it reacts with the power of heat is called kinetic energy. For example..... If we take 100ml of water and 100grms of sugar and take two glass put the sugar and water the same amount in both glass and one will be kept in the room temperature and another we will give heat and you will see that the glass which is kept in the room temperature then the sugar will take to time to dissolve in water and the another too which we are giving heat to it so it will dissolve faster then another one. It is just because we are giving heat to the particle of sugar to break down the particles are getting energy by the heat so that's why it dissolved faster than another which was kept in the room temperature.
