Question

What happen when iron react with stream and calcium and potassium are put in water

Answer 1

Answer:

Iron react with steam to form the metal oxide and hydrogen. (ii) The reaction of calcium with water is exothermic but the heat evolved is not sufficient for the hydrogen to catch fire. Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of the metal.

Explanation:

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Answer 2

Answer:

Iron react with steam to form the metal oxide and hydrogen. The reaction of calcium with water is exothermic but the heat evolved is not sufficient for the hydrogen to catch fire. Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of the metal.