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.
Answers
Answer:
After calcium reacts with water, hydrogen gas is released in the reaction. This bubbles of hydrogen gas stick to the surface of the metal. The buoyancy of the gas bubbles lifts the calcium up. Therefore, calcium floats on water
Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of metal. Ca(s) + 2H2O(l)→ Ca(OH)2 + H2(g) Magnesium reacts with hot water and starts floating due to the bubbles of hydrogen gas sticking to its surface.
They starts floating because the bubbles of hydrogen gas which are formed during the reaction stick to the surface of the metal.
Answer:
Because when calcium is reacted with water than the gas bubbles evolved attaches to the calcium and it starts floating
Another element is magnesium which float on water
Ca + H2O → Ca(OH)2 + H2↑ + ∆