She is writing some statements about “metals and non-metals” but she confused to … However, the metals that react SLOWLY with cold water are the metals from Group-IIA(Magnesium, Calcium, etc). All of these metals react vigorously or even explosively with cold water. The Group 1 metal (M) is oxidised to its metal ions, and water is reduced to hydrogen gas (H 2) and hydroxide ion (OH −), giving a general equation of: Metal starts moving over the surface of water making a hissing sound. Calcium, for example, reacts fairly vigorously and exothermically with cold water. These metals react with cold water with increasing vigor to give the metal hydroxide and hydrogen. Na + 2 H 2 O ———-> 2NaOH + H 2 . Reaction of aluminium metal with water: Reaction of aluminium metal with cold water is too slow to come into notice. Answer. [D]. 2)Magnesium is less reactive metal so it react slowly with cold water,it reacts rapidly only with hot boiling water. Sodium and potassium metals react violently with cold water. At room temperature, the reaction of Fe is very slow but red hot iron reacts with steam to form Fe 3 O 4 with hydrogen gas. It uses these reactions to explore the trend in reactivity in Group 1. Calcium and the metals that are more reactive than calcium in the reactivity series can react with cold water to form the corresponding hydroxide while liberating hydrogen gas. Observations: 1. Soon the metal catches fire and starts burning. The Facts. A metal which does not react with cold water but reacts with steam to liberate H2 gas is (A) Na (B) Mg (C) Au (D) Fe. Metal starts reacting with water causing little explosions. General. 2. For example, the reaction between potassium and water yields potassium hydroxide and H 2 gas, as described by the chemical equation provided below. Identify X, Y and Z and also arrange them in order of - 1624077 Of the three metals X, Y and Z. X reacts with cold water, Y with hot water and Z with steam only. Check Answer and Solution for ab 3. Name the three metals which react with cold water to form hydrogen gas. Support your answer with equally balanced chemical equations. The alkali metals (Li, Na, K, Rb, Cs, and Fr) are the most reactive metals in the periodic table - they all react vigorously or even explosively with cold water, resulting in the displacement of hydrogen.. None of the above View Answer; Q6 Pratibha is taking preparation for her final examination. MEDIUM. All metals, if they do react with water at all, react faster in steam than in water. Strontium and barium have reactivities similar to that of lithium. If the gas evolved burns with a 'pop' sound, it indicates that it is hydrogen gas. 1)Sodium is a very reactive metal,therefore sodium metal react violently even with cold water. This page looks at the reactions of the Group 1 elements - lithium, sodium, potassium, rubidium and caesium - with water. 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