2: Write the Word Equation. Recently Metal-Organic Framework (MOF)-based materials have been shown to be a highly promising candidate for water oxidation with first row transition metals. +    3H2O(g)   Chemical reactions such as combustion in fire, fermentation and the reduction of ores to metals were known since antiquity. If the reactants are a metal and water, the products would be a base and hydrogen gas (don't forget the subscript 2 for diatomic). This produces hydrogen and zinc sulfate, both of which can be tested for.        ZnO(s)         Which of the following is the correct word equation for a Group 1 metal?    In each case, a solution of the metal hydroxide is produced together with hydrogen gas.      Answer: 3: Balance the Symbol Equation. water, PowerPoint designed for AQA GCSE 9-1 COMBINED SCIENCE: TRILOGY TOPIC 12 (Chemical Changes). 1 st - most reactive. They have many uses due to their properties which include strength, malleability, conduction of electricity and conduction of heat. 2Al(s)    $$\ce{2Li(s) + 2H2O(l) -> 2LiOH(aq) + H2(g)}$$ Also remember that if the metal that displaces the Hydrogen has a charge, for instance Iron (II), although that wouldn't be realistic, the reactants would become $\ce{Fe(OH)2 + H2}$. Metals can react with water, acid and oxygen. (1) The reaction between a metal and an acid can be represented by the general word equation shown below: acid + metal → salt + hydrogen gas . This can be represented in different ways as shown: Word equation \[Calcium + water \to calcium\,hydroxide + hydrogen\] +         H2(g), aluminium  +  steam    When a reactive metal reacts with water, it forms the metal hydroxide and hydrogen. ; [11] [12] Preparation of the surface and electrolysis conditions have a large effect on reactivity (defects, steps, kinks, low coordinate sites) therefore it is difficult to predict an OER material's properties by its bulk structure. The resulting solution is basic because of the dissolved hydroxide. Na_{(s)}+H_2O_{(l)}\rightarrow NaOH_{(aq)}+H_{2(g)} Let us now balance this equation. 2Al(s) + 3H2O(g) Al2O3(s) + 3H2(g) zinc + steam zincoxide + hydrogen. 4: Write the Word Equation. Some metals react vigorously even with cold water,some react with hot water,some metals react with steam whereas some metals do not react even with steam. 2 nd. Metal + Water ———> Metal Hydroxide + Hydrogen The intensity of reaction of a metal with water depends on its chemical reactivity. This is shown in the equation below: Alkali Metal + Water Metal hydroxide + Hydrogen The Periodic Table When metals react with water, metal hydroxides and hydrogen gas are formed. hydrogen. Author: Created by almahad. Mg(s)    +    3H2O(g)  GCSE Chemistry When metals react with acids, a salt of the metal and hydrogen gas are formed. magnesium + Acid + Metal Word Equations Chemistry Tutorial Key Concepts. The reactivity of the metal determines which reactions the metal participates in.   3                              The reaction of alkali metals with water is represented by the following equation: 2 M(s or l) + 2 H 2 O (l) --> 2 M(OH) 2 (aq) + H 2 (g) Where M is the alkali metal.The heat given off by this reaction immediately melts the sodium and potassium and is frequently sufficient to ignite the hydrogen gas produced:    A more active metal will react more readily with water than a less active metal. Students will now be shown the general word equation for a metal + water, students will now be asked to copy and complete a set of further metal + water word equations. Metal + Water ⇨ Metal hydroxide + Hydrogen Most of the metals do not react with water. Copyright © 2015 gcsescience.com. calcium + water → calcium hydroxide + hydrogen aluminium + water → aluminium hydroxide + hydrogen and steam is reversible.       The Reactivity Series The Reactivity Series of Metals: 1: Write down the Reactivity Series from Potassium to Gold. Preview. metals. All Rights Reserved. This can be represented in different ways as shown: \[Calcium + water \to calcium\,hydroxide + hydrogen\], \[Ca + 2{H_2}O \to Ca(OH)_2^{} + H_2^{}\], \[Ca(s) + 2{H_2}O(l) \to Ca^{+2}(aq)+2OH^{-}(aq)\], Metals above hydrogen on the electrochemical series react with acids. All the alkali metals are stored in oil or an unreactive gas such as argon to prevent them reacting with the moisture in the air. 2K (s) + 2H 2 O (l) = 2KOH (aq) + H 2 (g) Potassium (K) is a group 1 metal, which is a solid. steam - H2O(g) but not water - Hydrogen exists naturally as a diatomic molecule and is usually a gas at room temperature, so it is written as H 2 (g). gcsescience.com, Home Using a metal and an acid to produce hydrogen and a salt, Religious, moral and philosophical studies. Sodium (a soft white metal) reacts with chlorine (a smelly gas used to keep pool water clean) to produce sodium chloride (plain old table salt!). Answer The Reaction of Copper with Air.            Fe2O3(s)      This equation applies to any of these metals and water - just replace the X by the symbol you want. (adsbygoogle = window.adsbygoogle || []).push({}); Metals in the reactivity series from magnesium to iron react with +   hydrogen. Explain why calcium metal after reacting with water starts floating on its * surface. Metal Reactions with Oxygen Water and Acid. gold and platinum When metals react with oxygen, metal oxides are formed. In general an acid reacts with a metal to produce a salt and hydrogen gas. Our tips from experts and exam survivors will help you through. Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.   aluminium oxide  +   Contains questions with answers. +      3H2(g), zinc    +    steam             zinc Once this is complete, students will be asked to predict what happens when francium and caesium are dropped in water, students will then watch a video to check whether their answer is correct. The ease with which a metal reacts is known as its activity. When metals react with water, metal hydroxides and hydrogen gas are formed. Metal: Reaction: Order of reactivity: Products: Potassium: Violent reaction with cold water. Alkaline Earth Metal Oxides and Water. Water (H 2 O) reacts with Potassium to form Potassium Hydroxide (KOH) and Hydrogen (H 2).       Revision Questions, gcsescience.com Similarly to the alkali metal oxides, alkaline earth metal monoxides combine with water to form metal hydroxide salts (as illustrated in the equation below). +    H2O(g)             MgO(s)         In each of the following descriptions, I am assuming a very small bit of the metal is dropped into water in a … Links gas. They react very strongly with water to produce hydrogen gas and an alkali (metal hydroxide). steam. Mg(s) + H2O(g) MgO(s) + H2(g) aluminium + steam aluminiumoxide + hydrogen. Floats and catches fire. H2O(l). sodium, lithium and calcium Solid sodium metal reacts with water, giving a solution of sodium hydroxide and releasing hydrogen gas.   gcsescience.com.    One element (the active metal) displaces another in a compound (the acid).             Al2O3(s)      In other words, the net ionic equation applies to reactions that are strong electrolytes in water. metal + water → metal hydroxide + hydrogen gas. Chemical equation: 2 K ( s ) + 2 H 2 O ( l ) → 2 K O H ( a q ) + H 2 ( g ) oxide  +   hydrogen. 5 1 customer reviews. The reactions of metals can be summed in the diagram below. Reactivity Series Quiz 2Fe(s)    lead, copper, silver, Solution: Let us first write down the chemical formulas. magnesium+steam magnesiumoxide + hydrogen. 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Gcsescience.Com the Periodic Table Index reactivity Series Revision Questions, gcsescience.com the Periodic Index!
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