O-LevelChemistryBonding & Structure5070/11 · Oct/Nov 2020 · Q91 Mark

The circuit diagram shows an experiment using a rod of copper and a rod of graphite. [Circuit diagram] When the switch is closed, the bulb lights because an electric current flows through the copper and the graphite. Which particles move through these two solids?

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Acopper ions: ✓, electrons: ✓, carbon ions: X

Bcopper ions: X, electrons: ✓, carbon ions: X

Ccopper ions: ✓, electrons: X, carbon ions: X

Dcopper ions: X, electrons: X, carbon ions: ✓

✓ Correct answer

B: copper ions: X, electrons: ✓, carbon ions: X

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2020 Paper 1 Variant 1, question 9.

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