Question

Q.25. () Calcium metal starts floating on the surface of water. Explain.

(b) Give the chemical equation involved in the above reaction
(6) Out of copper and iron, which metal reacts with steam? Give the chemical equation involved,
(a) How do we collect hydrogen produced when a metal reacts with water (cold, hot or stearn) ?
(e) Arrange
the following metals in order of increasing reactivity :
Al, Mg, Fe, Zn
Or​

Answer 1

Answer:

so, here is your answer

Explanation:

calciumm 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.