Question

Why does calcium float in water?​

Answer 1

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•The reaction of calcium in water is not violent.

•Calcium starts floating because hydrogen gas is formed during the reaction and that get struck to the metal so it floats.

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Answer 2

$\huge\underline\blue{\sf Answer}$

WHY DOES CALCIUM FLOAT ON WATER ::

✴The calcium on reacting with water gives calcium hydroxide and hydrogen.

➡Ca + 2 H2O ______ Ca(OH)2 + H2

✴In the above reaction H2 is released.

✴we know that calcium do not react violently with water.

✴So the heat released. is not sufficient to catch fire.

✴Hydrogen released during the reaction get stick to the surface of the metal.

✴As the hydrogen molecules exerts upward pressure it floats on water.

✴This is the reason for flotation of calcium in water.

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