visit in your area and collect the following articles. (i) Copper wire, (ii) Sulphur, (iii) Aluminum sheet, (iv) Iron nail, (v)Iodine crystal Answer the following :-
(a) Classify them into metals and non metals.
(b) Iron nail has a brown layer why is it so?
(c) Which one is a better conductor of heat?
(d) Write down the reaction of metals with water.
(e) Write down the reactions of nonmetals with water
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(a) metals are (i)(iii)(iv) non metals are (ii)(v)
(b) when the nails rust the iron combines with the oxygen in air and water vapour to give a brown coating to iron
(c)
(d) Cu+H2O:Cuo+H2
(e)
(b) when the nails rust the iron combines with the oxygen in air and water vapour to give a brown coating to iron
(c)
(d) Cu+H2O:Cuo+H2
(e)
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