At low temperatures, the existence of condensed states of matter – solid and liquid – is possible.
At T = 10 ^ 3 K dissociation of molecules into atoms occurs.
At T = 10 ^ 4 K ionization of atoms begins, and at T = 10 ^ 7 K it ends; the substance at the end of this stage consists only of atomic nuclei and free electrons.
At T> 10 ^ 9 K, nuclear destruction occurs; the substance in this case consists of protons and electrons.
At T> 10 ^ 3 K, the formation of pairs of nucleons – antinucleons is possible
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