How does the metal magnesium differ from the metal calcium in their reaction with water?
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calcium reacts with cold water to liberate hydrogen
magnesium reacts with warm water or steam to liberate hydrogen
magnesium reacts with warm water or steam to liberate hydrogen
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Answer:
The reaction of calcium with water is less violent. 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. Magnesium does not react with cold water.
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