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Materials: Metals and Non-Metals
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14/04/2021 2:11 pm
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There are four materials A, B, C, and D. A and D are hard and shiny, but B and C are dull and not very hard. Identify the metals and non-metals from A, B, C, and D.
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14/04/2021 2:12 pm
A and D are metals.
B and C are non-metals.