The correct classification of each substance is as follows:
- A sample of mercury: conductor
- A piece of glass: insulator
- A rubber hose: insulator
- A negatively ionized lithium paste: conductor
What are conductors and insulators?
A conductor is a substance that can transmit electricity, heat, light or sound while an insulator is a substance that does not transmit heat, sound or electricity.
Conductors are usually metals while insulators are usually non-metals. Examples of conductors include;
Examples of insulators include;
Therefore, the correct classification of each substance is as follows:
- A sample of mercury: conductor
- A piece of glass: insulator
- A rubber hose: insulator
- A negatively ionized lithium paste: conductor
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