1. The problem statement, all variables and given/known data Is the potential energy between atoms in solids, liquids and gases, elastic or electrical? I've read in some sources that for solids, p.e. > k.e. because it has the strongest intermolecular forces among the three states of matter. So I'm assuming it is elastic potential energy as it involves inter-atomic forces. But some other sources states that if we heat a stone, it gains both kinetic and electrical potential energy. So is it elastic or electrical? I'm really confused. Hope to clear this doubt soon .. Thanks in advance !