Question 34
MediumOriginal questionWhich non-metal conducts electricity well enough to be used for electrodes in dry cells?
Show the answer and explanation
CorrectNot quiteAnswer B
Correct answer: B
Explanation
Non-metals generally do not conduct electricity, but graphite, a form of carbon, is an exception.
Each carbon atom in graphite has one free electron, which lets current flow along its layers.
Worth noting
Diamond is also carbon, but it has no free electrons and does not conduct.
- Concept
- Graphite, the conducting non-metal
- Typical timeTypical
- 60 s
- Your timeYours
- —
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