Give reason for the following :
(i) Copper is used to make electric wires.
(ii) Gold is used to make jewellery.
Answers
Answer:
1.copper is good conductor of electric
2.gold is a jewellery
Explanation:
(i) copper is used for electrical wiring because it is a good conductor of electricity, metal particles are held together by strong metallic bonds, which is why they have high melting and boiling point
(ii) Gold are used to make jewellery because the metals used in jewellery are always be chosen on the basis of its reactivity. It should be unreactive so that the metal does not tarnish. Many metals used for jewellery are expensive as well because they are rare
Gold are used to make jewellery because of the following reasons.
They are highly lustrous metals which are resistant to corrosion.
They are highly malleable and ductile so can be transformed into any shape or design.
The main reason is that gold and platinum are not readily oxidized by oxygen or other nonmetals, they do not tarnish readily.