Chemical reactions between compounds CAN break up the compounds
and release some of the elements in them, but that doesn't always happen
in chemical reactions. And even when it does, the elements that are there
after the reaction were already there before it. The reaction didn't form them.
Elements form in the first place by fusion in stars and supernovae.
===> Every atom in your body that's not Hydrogen
formed in the core of a star or in the explosion of a
supernova. Is that cool or what !
