<human>:  What are the different types of phase transitions?
<bot>: 
1. Solid-liquid: This type of phase transition occurs when the particles in a solid material start vibrating in an organized pattern and the material changes from a solid to a liquid state.
2. Liquid-gas: This type of phase transition occurs when the particles in a liquid material become dispersed and move around randomly, resulting in the material changing from a liquid to a gas state.
3. Solid-gas: This type of phase transition occurs when the particles in a solid material become separated, resulting in the material changing from a solid to a gas state.
4. Solid-solid: This type of phase transition occurs when the microscopic interactions between the molecules of a solid material change and the material changes from one solid state to another.
5. Liquid-liquid: This type of phase transition occurs when two liquids mix and the molecules interact, resulting in a different liquid.