Question

Give reasons for the following:
(a) The electric wires are made of copper.
(b) Gold and silver are used for making jewellary.
(c) Graphite is used for making electrodes in electric cells.
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Answer 1

Answer:

a) copper is an good condutor of electricity.

b) They are low reactive metals ,lustrous , malleable and ductile.

c) Although it is allotrope of carbon it is good conductor of electricity.

Answer 2

Answer:

a) because the copper is a good conductor of electricity.

b) because they are lustre,less reactive with air and water, ductile and malleable.

c) because is a good conductor of electricity,has valence electrons, cheaper and non corrosive.