Is this a question?
Or is this telling people who need this answered it.
It expanded slowly - False
It gradually warmed - False
Stars and galaxies formed - True
Atoms such as hydrogen and helium formed - True
It was no bigger than the head of a pin before it exploded - True
Oxidation and reduction. ... It refers to electrochemical processes<span> involving electron transfer to or from a molecule or ion changing its oxidation state. This reaction can occur through the application of an external voltage or through the release of chemical energy.</span>