What is the name of processes involves weakening of attraction between particles?

The process that involves weakening the attraction between particles is called "thermal energy increase," often leading to phase changes such as melting or vaporization. As temperature rises, the kinetic energy of the particles increases, causing them to move more vigorously and overcome intermolecular forces. This process can also be referred to as "dissociation" in some contexts, particularly when discussing the breaking of bonds in chemical compounds.