daniellemills2005 daniellemills2005 08-11-2022 Physics Answered In the reaction shown, iron reacts with water to form iron oxide (Fe3O4) and hydrogen gas (H₂). 3Fe + 4H₂0 Fe3O4 + 4H₂ Which of these BEST describes the iron (Fe) reactant? A. molecule B. ion C. compound D. Element