To introduce the lesson ‘Metals & Non-Metals’ grade
VIII students were taken to the laboratory and given samples of Mg ribbon, Zinc granules and
Copper turnings along with Sulfur powder. They were asked to observe the given
substances under certain criteria such as shine, ability of stretching, pulling
two wires etc. The students came out with
the observations that except Sulfur all other material were having
shine,stretchable, and can be pulled to wires.
So They also came across the theory that those which
conduct electricity and could produce sound are called as "Metals" and opposite of them are
called as "Non-metals".
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