Monday, December 23, 2013

Chemistry-Related

Chemistry 1 Question 1 1.1 The fundamental ideas in chemistry Group 1 elements burn vigorously when het up(p) in oxygen. (a)Complete these diagrams to denominate the electronic structures of atomic number 11 and oxygen atoms.(2 marks) (b)Write the account book equality that describes the reaction between sodium and oxygen.(1 mark) (c)Write the equilibrize par for this reaction, including the arouse symbols.(3 marks) (d)why are the elements in group 0 indifferent?(1 mark) Question 2 1.2 Limestone and building materials When hydrated lime hydratestone is het up(p) to make cement it first reacts to produce lime (calcium oxide). (a)Write a sound out equality utilise chemic names for what happens when limestone is heated.(1 mark) (b)Write the chemical 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) pee 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 constrict. It can likewise be extracted by phytomining. (a)Draw an arrow on the following reactivity series (reactivity decreases down the list) to head where pig should be placed.(1 mark) sodi um calcium magnesium aluminium carbon z! inc 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 electronegative electrode during electrolysis. (2 marks) (e)What is phytomining?(2 marks) (f)Predict the method acting of extraction used to...If you want to trance a fully essay, order it on our website: OrderCustomPaper.com

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