Materials may be natural or man-made. They may exist as solids, liquids and gases, and as a mixture of states.
A short article based on an extract from Topics in Safety, Topic 17 (Electricity), which is freely available to Association for Science Education (
The popular science shows that strip science down to its bare essentials.
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A really useful overview of the versatility of copper and its alloys which signposts other resources from the Association.
Copper and copper alloy coins and tokens are found which date back hundreds and sometimes thousands of years.