The particle model explains the differences between solids, liquids and gases. Changes of state Solids, liquids and gases change state when they are heated or cooled. Processes such as evaporation ...

The number of particles does not change during a change of state, only their spacing and arrangement. As a result, the total mass has not changed. It does not matter if a substance melts ...

Researchers from the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS) have proposed a key indicator ...