Name one metal that will not react with cold water but will react with steam.

• a.) Zinc
• b.) Iron
• c.) Calcium
• d.) Magnesium

Among the options provided, the metal that will not react with cold water but will react with steam is Magnesium.

Explanation of Metal Reactions

Here's a brief overview of how these metals interact with water:

• Zinc: Reacts slowly with cold water and more readily with steam.
• Iron: Generally does not react with cold water but can react with steam at high temperatures.
• Calcium: Reacts vigorously with cold water.
• Magnesium: Does not react with cold water but reacts with steam to form magnesium oxide and hydrogen gas.

Key Takeaway

Magnesium is the correct answer because it requires steam to react, while remaining unreactive with cold water.