Water's particles are free-moving, pretty relaxed, chillax.
-- LIQUID
Water's particles have suddenly heated up and are moving like how you feel after drinking 20 cans of Monster Energy!
-- GAS
Weird... after a while, the particles (cooled and) just bunched up together and are barely moving. They're stuck together and move so slowly.
-- SOLID
States of matter: SOLID, LIQUID, and GAS