* Between 1 & 2, the particles are vibrating and gaining **kinetic energy** and the temperature rises
* Between 2 & 3, all the energy goes into breaking bonds – there is **no** increase in **kinetic energy** or **temperature**
* Between 3 & 4, the particles are moving around and gaining in **kinetic energy**
* Between 4 & 5, the substance is boiling, so bonds are breaking and there is **no** increase in **kinetic energy** or **temperature**
* From 5 & 6, the particles are moving around rapidly and increasing in **kinetic energy**