Write the difference between metals and non-metals under the following heads.
(i) Nature, (ii) State, (iii) Lustre, (iv) Ductility, (v) Malleability, (vi) Conductivity

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Solution

Metals Non-metals
(i) Nature They are hard.
They are soft (except diamond).
(ii) State They are solids at room temperature (except mercury which is liquid).
They are either solids, or liquids or gases.
(iii) Lustre Metals are lustrous. They have shiny surfaces.
Metals are non-lustrous (except iodine).
(iv) Ductility They are ductile. They can be converted into thin wires.
They are non ductile.
(v) Malleability They are malleable. They can be converted into thin sheets by hammering (sodium and potassium are exceptions).
They are brittle. They will break down into pieces when beaten by hammer.
(vi) Conductivity
They are good electrical and thermal conductors.
They are poor electrical and thermal conductors (except graphite).

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Compare the properties of metals and non-metals with respect to (i) malleability (ii) ductility, and (iii) electrical conductivity.

\begin{matrix} P r o p e r t i e s & M e t a l s & N o n - m e t a l s 1. A p p e a r a n c e 2. H a r d n e s s 3. M a l l e a b i l i t y 4. D u c t i l i t y 5. H e a t C o n d u c t i o n 6. C o n d u c t i o n o f E l e c t r i c i t y \end{matrix}

Property of metal	Use in every day life
i. Ductility
ii. Malleability
iii. Conduction of heat
iv. Conduction of electricity
v. Sonority

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	Metals	Non-metals
(i) Nature	They are hard.	They are soft (except diamond).
(ii) State	They are solids at room temperature (except mercury which is liquid).	They are either solids, or liquids or gases.
(iii) Lustre	Metals are lustrous. They have shiny surfaces.	Metals are non-lustrous (except iodine).
(iv) Ductility	They are ductile. They can be converted into thin wires.	They are non ductile.
(v) Malleability	They are malleable. They can be converted into thin sheets by hammering (sodium and potassium are exceptions).	They are brittle. They will break down into pieces when beaten by hammer.
(vi) Conductivity	They are good electrical and thermal conductors.	They are poor electrical and thermal conductors (except graphite).