Metals like aluminum, iron and Zinc do not react with cold or hot water. When metals react with steam, the resultants are a metal oxide and hydrogen. These react vigorously (and even more vigorously the higher up the series you go) with cold water to form the metal hydroxide and hydrogen. The Reaction of Metals with Water.. Potassium, sodium, lithium and calcium react with cold water, see alkali metals and alkaline earth metals.. Metals in the reactivity series from magnesium to iron react with steam - H 2 O (g) but not water - H 2 O (l). Metal are Cu, Hg, Ag, Pt and Au. How do you balance the chemical equation for the single-replacement reaction of zinc and hydrochloric acid to generate hydrogen gas. Zinc reacts readily with hydrochloric acid, while copper does not. (c) An alkali : Zn, Pb react with concentrated alkali on boiling to give the corresponding metallic salt and liberate hydrogen. acids. This is done by heating the water until it turns to steam. This preview shows page 8 - 11 out of 18 pages. The zinc reacts with the acid releasing bubbles from the nicked area until nothing remains but a thin shell of copper. In general, the more reactive the metal, the more rapid the reaction. These react with steam to give a metal oxide and hydrogen. The reaction forms the metal oxide and hydrogen gas. Metals below magnesium in the reactivity series will not react with water unless additional energy is supplied in the form of heat. Metals from magnesium to iron. Adding a metal like copper to zinc ions will not displace the zinc since copper appears lower than zinc on the table. (b) With dil. The reaction is similar to the one between magnesium and steam but is slower. 2Al(s) + 3H 2 O(g) – Al 2 O 3 (s) + 3H 2 (g) 3Fe(s) + 4H 2 O(g) – Fe 3 O 4 (s) + 4H 2 (g) It reacts with hot water to form magnesium hydroxide and hydrogen. The zinc reacts slower with the steam than magnesium and does not glow brightly as it is converted to zinc oxide. ... zinc does react with steam but it is a very slow reaction. The reaction depends upon the reactivity of metals. Question 3. In general, Metals react with water and produce metal oxides and hydrogen gas. Metals below [H] do not react even with steam. A triangular file is used to nick the edge of a penny to expose the zinc slug below the layer of copper. Metals like potassium and sodium react violently with cold water. The Reactivity Series. They react with steam to form metal oxide and hydrogen. When zinc reacts with steam, zinc oxide and hydrogen gas are produced. 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