1. No energy is gained or lost when molecules collide. 2. The molecules in a gas take up a negligible (able to be ignored) amount of space in relation to the container they occupy. 3. The molecules are in constant, linear motion.
Here Are The Three Main Parts: 1) No Energy Is Gained Or Lost When Molecules Collide. 2) The Molecules In Gas Take Up A Negligible Amount Of Space In Relation To The Container They Occupy. 3) The Molecules Are In Constant Linear Motion ~Spades15