Write the product when Iron reacts with water.

Explanation

To determine the product when iron reacts with water, we can follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are iron (Fe) and water (H₂O).

### Step 2: Understand the Conditions
Iron does not react with cold water but can react with steam (hot water). This is an important condition to consider.

### Step 3: Write the Reaction
When iron reacts with steam, it forms iron oxide and hydrogen gas. The reaction can be represented as:
\[ \text{Fe} + \text{H}_2\text{O} \rightarrow \text{Fe}_3\text{O}_4 + \text{H}_2 \]

### Step 4: Identify the Products
The products of this reaction are:
1. Iron oxide (specifically, a mixed oxide known as magnetite, Fe₃O₄)
2. Hydrogen gas (H₂)

### Step 5: Balance the Chemical Equation
To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

1. Start with the iron atoms:
- There are 3 iron atoms in Fe₃O₄, so we need 3 Fe on the left.

2. Next, balance the oxygen:
- There are 4 oxygen atoms in Fe₃O₄, so we need 4 H₂O on the left to provide 4 oxygen atoms.

3. Finally, balance the hydrogen:
- From 4 H₂O, we get 8 hydrogen atoms, so we need 4 H₂ on the right.

The balanced equation is:
\[ 3 \text{Fe} + 4 \text{H}_2\text{O} \rightarrow \text{Fe}_3\text{O}_4 + 4 \text{H}_2 \]

### Final Answer
The product when iron reacts with water (steam) is iron oxide (Fe₃O₄) and hydrogen gas (H₂).

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