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Sunday, December 8, 2013

Chemistry-Related

Chemistry 1 Question 1 1.1 The fundamental ideas in chemistry Group 1 elements burn vigorously when alter in oxygen. (a)Complete these diagrams to denominate the electronic structures of atomic number 11 and oxygen atoms.(2 marks) (b)Write the joint equality that describes the reaction between sodium and oxygen.(1 mark) (c)Write the equilibrize oppose for this reaction, including the arouse symbols.(3 marks) (d) wherefore are the elements in group 0 stable?(1 mark) Question 2 1.2 Limestone and building materials When hydrated lime hydratestone is heat to make cement it first reacts to produce lime (calcium oxide). (a)Write a name equality utilise chemic names for what happens when limestone is heated.(1 mark) (b)Write the chemical substance formula for: (i)limestone (1 mark) (ii)lime (1 mark) (c)Write a balanced par with state symbols for what happens when limestone is heated.(2 marks) body of water reacts with lime to form slaked li me (calcium hydroxide). (d)Write a word equation for this reaction using chemical names.(1 mark) (e)Write a balanced equation with state symbols for this reaction.(3 marks) (f)Farmers use slaked lime for liming the soil. Why is it necessary to lime some soils?(1 mark) Question 3 1.
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3 Metals and their uses Copper can be obtained from solutions of tomentum salts by electrolysis or by displacement using bite contract. It can besides be extracted by phytomining. (a)Draw an arrow on the following reactivity series (reactivity decreases down the list) to head where tomentum should be placed.(1 mark) sod ium calcium magnesium aluminium carbon ! zinc iron (b)Write a word equation for the displacement of copper from copper sulfate solution by iron.(1 mark) (c)Write a balanced equation with state symbols for this reaction.(3 marks) (d) inform why copper is produced at the veto electrode during electrolysis. (2 marks) (e)What is phytomining?(2 marks) (f)Predict the method acting of extraction used to...If you want to drag a fully essay, order it on our website: OrderCustomPaper.com

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