1 Give the basic properties of metals and non-metals
2 Why electric wires are made up of copper?
3 How metals react with oxygen present in air?
4 Give preventive measure of corrosion
5 What do you observe when iron metal is exposed to air? Give reason for the observations
6 Differentiate between metals and non-metals on the basis of their properties
7 Graphite is used for making electrodes in electric cells. Give reason
8 A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet doesn't
Answers
Answer:
1) metals have ductility luster they are good conductor of heat or electricity non metal have not ductility luster and they are bad conductor of heat.
2)copper is highly reactive to electric current as compare to other metals so copper are use
4) oiling them greasing them
6)answer first
7) the graphite is made to carbon and it stature is cage like it is supply energy easily
8) i don't know
Answer:
1 metals are solid and when they are beaten produces sound and non metals are just apposite.
2 silver is the best conductor of electricity but it is very expensive and can melt when heated so in place of silver copper is used which is cheap and has high melting point .
i will write the answer after sometime my hand is paining and in my phone i can't speak i will write the answer after some time