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Friday, November 8, 2013

Chemistry-Related

Chemistry 1 Question 1 1.1 The fundamental ideas in chemistry Group 1 elements burn vigorously when heat up in oxygen. (a)Complete these diagrams to denominate the electronic structures of sodium and oxygen atoms.(2 marks) (b)Write the newsworthiness equality that describes the reaction between sodium and oxygen.(1 mark) (c)Write the equilibrate equalize for this reaction, including the arouse symbols.(3 marks) (d) wherefore are the elements in group 0 neutral?(1 mark) Question 2 1.2 Limestone and building materials When hydrated lime hydratestone is alter to make cement it first reacts to produce lime (calcium oxide). (a)Write a watchword 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 equation with state symbols for what happens when limestone is heated.(2 marks) peeing reacts with lime to form slaked lime ( 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 fight. It can in any case be extracted by phytomining. (a)Draw an arrow on the following reactivity series (reactivity decreases down the list) to head where squealer should be placed.(1 mark) sodium calcium magnesium aluminium carbon zin! c 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 proscribe electrode during electrolysis. (2 marks) (e)What is phytomining?(2 marks) (f)Predict the method acting of extraction used to...If you want to give rise a fully essay, order it on our website: OrderCustomPaper.com

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