Question

why is kinetic energy related to the state of matter

Answer 1

Heya

What we know is In particular, temperature can be defined in terms of the particle model to be a measure of the average kinetic energy of the particles. As we heat a substance we give more thermal energy to the particles which is converted to kinetic energy and hence they move faster and further apart. If we continue heating, eventually a phase change occurs, but during such a process the temperature (and hence kinetic energy) remains constant...

So we can relate kinetic energy of the particles to their states.....