Give reasons for the following:
$(a)$ School bells are made of metals.
$(b)$ Electrical wires are made of copper.
$(a)$ School bells are made of metals.
$(b)$ Electrical wires are made of copper.
(N/A) Metals are sonorous,meaning they produce a ringing sound when struck. Therefore,they are used to make school bells.
$(b)$ Copper is an excellent conductor of electricity with low electrical resistance. Therefore,it is used for making electrical wires.
$(b)$ Copper is an excellent conductor of electricity with low electrical resistance. Therefore,it is used for making electrical wires.
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