A-LevelChemistryChemical bondingMay/June 2014Paper 1 Q311 Mark
P and Q are two compounds with similar Mr values. Molecules of P attract each other by hydrogen bonds. Molecules of Q attract each other by van der Waals' forces only. A sample of liquid P is compared to a sample of liquid Q. How will their properties differ? 1 P is more soluble in water than Q. 2 P has a higher melting point than Q. 3 P is more viscous than Q.
A1, 2 and 3 are correct
B1 and 2 only are correct
C2 and 3 only are correct
D1 only is correct
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The correct answer is A. 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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