A-LevelChemistryChemical bondingFeb/Mar 2017Paper 1 Q121 Mark
The electrical conductivities of two compounds, Y and Z, are shown in the table. conductivity of the compound in the liquid state conductivity of the mixture obtained by adding the compound to water Y: good good Z: does not conduct good What could compounds Y and Z be?
AAl₂O₃ SiCl₄
BNaF Al₂O₃
CNaF SiCl₄
DSiCl₄ Al₂O₃
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The correct answer is C. This question tests the candidate's understanding of chemical bonding within the Chemistrysyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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