AQA GCSE Chemistry · 8462
Specification 4.2.2.3 · Paper 1
Revise: Ionic Compound PropertiesThere are therefore no mobile charge carriers, so the solid does not conduct electricity.
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GCSE Chemistry · key term
A particle that carries electric charge through a substance, such as a mobile ion.
Used by AQA and OCR
Specification 4.2.2.3 · Paper 1
Revise: Ionic Compound PropertiesThere are therefore no mobile charge carriers, so the solid does not conduct electricity.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A mobile charged particle that carries electric charge through a material.
Revise: Bulk properties of ionic materialsIf an ionic compound dissolves in water, its ions separate and spread through the solution. These mobile ions also act as charge carriers, so the solution conducts electricity. The current is carried by ions, not by the electrons that were transferred when the ions originally formed.
Do not explain conduction by saying that electrons transferred during ion formation are now flowing. In molten ionic compounds and ionic solutions, the moving charge carriers are ions.
Do not say that electrons carry charge through a molten or dissolved ionic compound. The moving charge carriers are ions.
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