Why do CA and Mg metal floating on water surface ?
Answers
The reaction of calcium with water is less violent. SO, the heat released is not sufficient for the hydrogen to catch 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 floats on water
I hope you will understand the phenomenon!
Calcium (Ca) reacts with cold water to form Calcium hydroxide and hydrogen gas.
Heat produced is less that it is not enough to burn hydrogen gas.
The Calcium metal floats on water because the bubbles of Hydrogen gas formed during reaction stick to its surface.
Magnesium (Mg) metal reacts with hot water to form magnesium hydroxide and hydrogen gas.
The magnesium metal floats on water because the bubbles of Hydrogen gas formed during reaction stick to its surface.
Hope it helps...