Write a chemical equation for the reaction of (1) Iron with Steam (2) Calcium with Water (3) Potassium with Water

Answer: 

1. Iron with Steam Chemical Equation 

The chemical reaction of iron with steam can be shown as 

3Fe + 4H₂O → Fe₃O₄ + 4H₂

Iron + Water → Iron(II,III) Oxide + Hydrogen Gas 

When an iron metal reacts with steam, metal oxide and hydrogen gas are products that are produced. 

2. Calcium with Water 

When Calcium reacts with water , metal hydroxide and hydrogen gas produced as products

The chemical reaction are shown as 

Metal + Steam → Metal Hydroxide + Hydrogen Gas 

Ca + 2H₂O → Ca(OH)₂ + H₂

Calcium reacts with water and forms hydrogen gas and calcium hydroxide 

3. Potassium with Water 

To produce potassium hydroxide and hydrogen gas, potassium reacts violently with cold water. During the process, much heat is released the hydrogen gas generated caught fire and rapidly burns

2K + 2H₂O → 2KOH + H₂ + Heat