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Take the following objects : iron nail/sheet, copper wire, aluminium wire, a piece of coal. Rub each object on a fresh surface of sandpaper and observe. Hammer each object with force. (Take care not to hurt yourself.) Record your observations in the following table. Object Is the surface shining? yes/no Does the shape flatten/break into small pieces on hammering ? Iron nail Copper wire Aluminium wire Coal piece The objects in the above activity are made of the elements iron (Fe), copper (Cu), aluminium (Al) and carbon (C) respectively. Fill the following table on the basis of the observations obtained on doing the above two tests on each of the objects. Elements having a shiny surface Elements that flatten on hammering Elements with a dull surface Elements that break on hammering |
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Answer» Fe,Cu and Al have SHUNTING surface and FLATTENS on HAMMERING but C have dull surface and BREAKS when HAMMERED Explanation: |
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