O-LevelChemistryBonding & Structure5070/11 · May/June 2019 · Q91 Mark

Two statements about metals are given. 1 Metals contain a lattice of negative ions in a 'sea of electrons'. 2 The electrical conductivity of metals is related to the mobility of the electrons in the structure. Which is correct?

ABoth statements are correct and statement 1 explains statement 2.

BBoth statements are correct but statement 1 does not explain statement 2.

CStatement 1 is correct and statement 2 is incorrect.

DStatement 2 is correct and statement 1 is incorrect.

✓ Correct answer

D: Statement 2 is correct and statement 1 is incorrect.

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2019 Paper 1 Variant 1, question 9.

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