Here's why:

* Plasma: This state of matter is essentially a superheated gas where electrons are stripped from atoms, creating a mixture of ions and free electrons. These charged particles move at very high speeds, often approaching the speed of light. This is because the particles are constantly colliding and interacting, leading to a lot of kinetic energy.

While gases also have particles that move freely, they don't reach the same high speeds as plasma due to the absence of those charged interactions.

Let me know if you'd like more information on any of these states of matter!