Explain the reactions of different metals with lot water, cold water and steam. Give one example with a proper balanced chemical equations. Name two metals which do not react with any from of water.

Explanation

Reaction of metals with water.
(i) With cold water:
Sodium reacts vigorously with cold water and forms sodium hydroxide and hydrogen
`2Na(s)+underset("cold")(2H_(2)O(l))to2NaOH(aq)+H_(2)(g)`
(ii) With hot water
Magnesium reacts with hot water to form magnesium hydroxide and hydrogen
`Mg(s)+underset("Hot")(2H_(2)O)(I)toMg(OH_(2)(aq)+H_(2)(g)`
(iii) With steam:
When steam is passed over red hotiron it forms ferric oxide (III) liberating hydrogen
`underset("Red hot")(3Fe(s))+underset("Steam")(3H_(2)O(I))tounderset("Iron"(III)"Oxide")(Fe_(2)O_(3)(s))+3H_(2)(g)uarr`
`3Fe(s)+underset("Steam")(4H_(2)O)(I)tounderset("Iron (II,III)oxide")(Fe_(2)O_(3))+4H_(2)(g)uarr`
Gold and silver do not react with any form of water.