The kind of salts produced depends on the dilute acid used. Calcium + Water . The Periodic Table. All the alkali metals react vigorously with cold water. ; Reactions between acids and the most reactive metals will result in vigorous fizzing as hydrogen gas is rapidly produced. Calcium is a silvery-white metal; it is relatively soft, but much harder than sodium metal.Calcium is a member of the alkaline-earth metals (Group II on the periodic table); these metals react vigorously with water, although not as violently as the Group I metals such as sodium or potassium:. The reaction produces a solution of lithium hydroxide and releases hydrogen gas. Reaction of lead with air. 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). Gold, silver and platinum do not react with water. These metals react with cold water with increasing vigor to give the metal hydroxide and hydrogen. Non-metals do not react with water. Aluminum does not appear to react with water because an outer layer of aluminum oxide (Al 2 O 3) solid forms and protects the rest of the metal. It is generally the case that only weakly acidic or non-acidic metal oxides form metal hydroxides when in contact with water. A metal hydroxide has the general formula MOH or M(OH) 2. You must know how to test for hydrogen gas! This shows that the reactivity of the alkali metals increases as you go down Group 1. The reactivity series helps us to predict the capability of a metal to displace another metal during a displacement reaction. Of the three metals X, Y and Z. X reacts with cold water, Y with hot water and Z with steam only. Calcium, for example, reacts fairly vigorously and exothermically with cold water. Image source: en.wikipedia.org Magnesium reacts with water to give magnesium hydroxide and hydrogen as follows:Mg+2H{-2}O -> Mg(OH){-2}+H{-2}Normally Mg is coated with a thin layer of its oxide (MgO) when it is exposed to air. Last Lesson… METALS: The Physical Properties of Metals 2. When metals react with water, a salt and a gas are produced. Some metals react with water to form metal hydroxide whereas some of them do not react. Firstly, reactivity affects what a metal can react with. In the chart, the first five elements are considered highly reactive. It also determines the reactivity of a particular metal with oxygen, cold water, hot water or steam, and acid. Place approximately 1 g of the magnesium pieces in the test tube, but do not add the hydrochloric acid until everything else is ready to be assembled. Observing Acid-Metal Reactions. 2Pb(s) + O 2 (g) → 2PbO(s) Finely divided lead powder is pyrophoric, however, meaning it is a fire risk. 2Na + 2H 2 O → 2NaOH + H 2 A possible extension is to hold a cold piece of metal or glass above the place where you burst the bubbles so that the water vapour that forms during the reaction condenses on the metal or glass. Reaction Of Metal With Water. All three metals are less dense than water and so they float.. How does Sodium React with Water? Reaction between metals and water – Metals from potassium to calcium can react with cold water and release hydrogen gas. With the help of equations, explain the reaction of non-metals with oxygen. Strontium and barium have reactivities similar to that of lithium. * Metals react with water and produce a metal oxide and hydrogen gas. In each case, a solution of the metal hydroxide is produced together with hydrogen gas. 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