This picture shows the state of a thermal spring at Yellowstone National Park on a day with very clean air. Notice very small amount of clouding over the pool. California The man in the picture lit a single match above the pool.
Particles nucleate huge phase transition, forming clouds of water droplets.
An example is the acquisition of mass of the Z and W particles, while the photon remains massless. This is known as the electro-weak phase transition. The early universe vacuum phase transitions were similar to the H 2 O phase transitions in the pictures above.