* Temperature and Particle Speed: The higher the temperature of a substance, the faster its particles move on average. This is because temperature is a measure of the average kinetic energy of the particles.

* States of Matter: Steam is water in its gaseous state. While steam at 110°C has particles moving faster than liquid water at 110°C, the particles in *plasma* would move the fastest. Plasma is a state of matter where electrons are stripped away from atoms, resulting in highly energetic, rapidly moving particles.

So, the answer is: While steam at 110°C has particles moving faster than liquid water at 110°C, particles in plasma would be moving the most rapidly.