Question

GiveReason-Calcium float over water during reaction with water...​

Answer 1

Explanation:

Calcium reacts with water less vigorously so that the heat evolved is not sufficient for the hydrogen formed, to catch fire. Instead, calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of the water calcium. Therefore, Calcium floats over water during the reaction with water.

Answer 2

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1) Calcium is one of the reactive metals.

2) It reacts with water less vigorously as compared to other substances.

3) The heat evolved during the reaction is insufficient for hydrogen to catch fire.

4) Also, the bubbles of hydrogen gas formed stick to the metal surface during the reaction.

Hence, calcium floats on water during the reaction with water.

Hope it helps!

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