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Wednesday, February 5, 2014

Chemistry-Related

Chemistry 1 Question 1 1.1 The fundamental ideas in chemistry Group 1 elements burn vigorously when het in oxygen. (a)Complete these diagrams to denominate the electronic structures of sodium and oxygen atoms.(2 marks) (b)Write the playscript equality that describes the reaction between sodium and oxygen.(1 mark) (c)Write the balance correspond for this reaction, including the arouse symbols.(3 marks) (d) wherefore are the elements in group 0 indifferent?(1 mark) Question 2 1.2 Limestone and building materials When hydrated lime hydratestone is change to make cement it first reacts to produce lime (calcium oxide). (a)Write a news equality utilise chemic names for what happens when limestone is heated.(1 mark) (b)Write the chemic 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) water system reacts with lime to form slaked lime (calcium hydr oxide). (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 1.3 Metals and their uses Copper can be obtained from solutions of tomentum salts by electrolysis or by displacement using bite exhort. It can as well as be extracted by phytomining. (a)Draw an arrow on the following reactivity series (reactivity decreases down the list) to head where hair should be placed.(1 mark) sodium 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 nix electrode during electrolysis. (2 marks) (e)What is phytomining?(2 marks) (f)Predict the method acting of e xtraction used to...If you want to annoy a ! fully essay, order it on our website: OrderCustomPaper.com

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