Which substances conduct electricity?

A close-up photograph of an old, small unlit light bulb, similar to those used in school experiments

Source: © Shutterstock

In this class practical, students test the conductivity of covalent and ionic substances in solid and molten states. Includes kit list and safety instructions.

This experiment enables students to distinguish between electrolytes and non-electrolytes, and to verify that covalent substances never conduct electricity even when liquefied, whereas ionic compounds conduct when molten.

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