Complex sentence: A formula developed by Sandia National Laboratories which combines iron sulfate with ammonium nitrate results in an effective and cheap fertilizer which is useless as a component in an ANFO explosive; iron sulfate becomes iron nitrate and ammonium nitrate becomes ammonium sulfate.
Split into simpler sentences: A formula developed by Sandia National Laboratories which combines iron sulfate with ammonium nitrate results in an effective and cheap fertilizer which is useless as a component in an ANFO explosive; the iron ion "grabs" the nitrate and the ammonium ion takes the sulfate ion. Iron sulfate becomes iron nitrate and ammonium nitrate becomes ammonium sulfate.