Particle Theory

There are three states of matter, which are solid, liquid and gas.  The solid particles vibrate extremely slow and it only vibrate in a place but the attraction between the particles are very strong. There are very little spaces between the solid particles and they have a definite shape and volume. The liquid particles vibrate faster than solid and it also can roll. The attraction between the liquid particles are moderately strong and they more amount of spaces than solid. The liquid particles shape is not definite but the volume is definite. The gas particles are the only particle that can freely move in different direction in a extremely fast speed. The gas particles can vibrate, roll and move in a straight line. The attraction between the gas particles are very weak and have a large amount of spaces between each gas particles. The gas particles did not have definite volume and shape.

The process of changing from liquid to gas is called vaporization. The liquid particles turned into gas particles when the thermal energy was added. The thermal energy causes the attraction between the liquid particles to get weaker and the spaces between the particles is getting bigger. 

Part 2 of the Particle Theory

picture:

The gas particles from the pizza and the gas particles outside begin to bump into each other. The gas particles roll, vibrate and translate. The gas particles from the pizza bump into the gas particles outside and push it   into the persons nose.