Question

Explain why calcium metal after reacting with water starts floating on its surface. Write the chemical equation for the reaction. Name one more metal that starts floating after some time when immersed in water
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Answer 1

ANSWER ☺️

Yes.

Calcium metal reacts with water to form calcium hydroxide and hydrogen gas. The reaction of calcium with water is less violent (compared to Na and K). The heat is evolved is not sufficient for the hydrogen to catch fire.

Ca(s)+2H2O(l)----) Ca(OH)2(aq)+ H2(g) + small amount of heat Energy.

Calcium starts floating on water because it becomes lighter due to the bubbles of hydrogen gas formed stick to its surface.

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