Quantum Simulations Study Hydrogen Under Pressure

Hydrogen is the simplest known element. One might argue that fields-even dark energy fields and gravity comprise different kinds of elements I suppose. Hydrogen with a single proton and neutron and one electron per valence shell was the basic element of matter generated through the particle-wave zoo at the start of the present phase of the known Universe. Scientists have simulated how hydrogen behaves under intense pressure and increased heat...

http://www.sciencedaily.com/releases/2010/06/100623165125.htm

http://en.wikipedia.org/wiki/Hydrogen

Hydrogen behavior under pressure is interesting because as large clouds of hydrogen drew together under gravity pressure increased perhaps as in the simulation. Large gaseous planets may have formed and used similar phase transition processes.

Electrical exchanges increased under pressure and maybe that generates heat (the physics report did not explain, although sometimes electrical wires get warm with a lot of flow through too small of a wire).

I should mention that hydrogen has more than one form. With exchanges or loss of particles such a a neutron the charge of hydrogen can change. If deuterium forms then helium and fusion may occur with enough material and of course if stars form and nova in time other elements are produced that can go into the formation of different clumps of matter.