All metals, if they do react with water at all, react faster in steam than in water. However, the metals that react SLOWLY with cold water are the metals from Group-IIA(Magnesium, Calcium, etc).
Nickel Doesn't react with water under normal conditions
Zinc does react with cold water - it just does so very slowly. Steam is water that is very hot and thus as with any chemical reaction, the heat gives the molecules more energy and so they react faster.
Zinc reacts with steam to form Zinc oxide(yellow when hot and white when cold) and hydrogen. Zn+H2O=ZnO +H2
The iron is rusting because of its chemical bonding with oxygen, which creates ironoxide.
All metals, if they do react with water at all, react faster in steam than in water. However, the metals that react SLOWLY with cold water are the metals from Group-IIA(Magnesium, Calcium, etc).
Zinc does react with cold water - it just does so very slowly. Steam is water that is very hot and thus as with any chemical reaction, the heat gives the molecules more energy and so they react faster.
Iron and Zinc
Aluminum will not react with water at normal temperatures. Increase the temperature greatly, and just about any two things will react, though.
Nickel Doesn't react with water under normal conditions
Zinc is unreactive to cold water, but will react with steam to give zinc oxide and hydrogen.
Zinc does react with cold water - it just does so very slowly. Steam is water that is very hot and thus as with any chemical reaction, the heat gives the molecules more energy and so they react faster.
Zinc reacts with steam to form Zinc oxide(yellow when hot and white when cold) and hydrogen. Zn+H2O=ZnO +H2
alkali metals react violently in cold water
Alkali metals, for example: 2Me + 2H2O = 2MeOH + H2 Me is the metal
Mg does not react with cold water while Ca, Sr, and Ba react with cold water to form metal hydroxide and hydrogen gas.
Cold steam is not a correct term because steam, by definition, is water vapor that has reached a high temperature. If it's cold, it would just be water vapor or mist.