Chemistry
Give reason:
Copper and aluminium are used to make electric wires.
Elements, Compounds & Mixtures
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Answer
Copper and aluminium are good conductors of heat and electricity. They can be drawn into wires and beaten into sheets. Therefore, they are used to make electric wires.
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What do you understand by the statement — 'Metals are ductile and malleable? Give one example of each.
(a) What do you understand by 'Periodic Table'.
(b) A part of the Periodic table is given below with the symbols of some elements. Write the symbols of the missing elements.
Group →
Period ↓IA IIA IIIA IVA VA VIA VIIA Zero 1 H He 2 Li B N F 3 Mg Si S Ar 4 K Ca x x x x x x