Question

why calcium float in water​

Answer 1

Answer:

because the density of calcium is less than the density of water thus it floats

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Answer 2

Answer:

Here's your answer

Explanation:

The reaction of calcium with water is not very violent .

so the heat released is not sufficient for the hydrogen to catch the fire. Calcium starts floating because the bubbles of hydrogen gas which are formed during the reaction stick to the surface of the metal and hence calcium float on water