* Sound: Sound travels faster in solids than liquids. This is because the particles in solids are closer together and more tightly packed, allowing vibrations to transfer more efficiently.
* Heat: Heat can actually transfer faster in liquids than solids. This is because the molecules in liquids are more free to move and collide, transferring energy more easily.
* Individual particles: Individual particles in liquids can move faster than individual particles in solids. This is because particles in solids are held in a fixed position, while particles in liquids can move around more freely.
So, the answer depends on what you're asking about!