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Chemistry Paper 2, 3 SPM 2013 LPKPM

Posted on: May 11th, 2014 by admin

Peperiksaan Sebenar SPM Tahun 2013 Lembaga Peperiksaan, Kementerian Pendidikan Malaysia, Putrajaya. Kimia Kertas 2 dan 3. (Chemistry Paper 2 and 3 SPM year 2013. Board of Examination, MOE Malaysia)

Extract P2 Q. 10
(a) A farmer discovers that his vegetables are not growing well due to soil problems. By using your chemistry knowledge, state two possible causes and ways to overcome the problems by naming the chemical used.
(b) Table 10.1 shows the information on action of heat for two lead salts, P and Q.
Observation : Brown solid when hot, yellow when cold; Lime water become chalky, Brown solid when hot, yellow when cold, Brown gas, Rekindles glowing splinter. Based on Table 10.1, identify residue R, gas A, gas B and gas C.
(c) Table 10.2 shows three substances used to prepare magnesium sulphate. By using the substances in Table 10.2, describe how to prepare magnesium sulphate salt in the laboratory. Include the chemical equations involved in your description.

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