Question

difference between metals and nonmetals on the basis of their physical and chemical properties

Answer 1

Metal

1. Metals are electropositive.

2. They react with oxygen to form basic oxides.



3. These have ionic bonds.

4. They react with water to form oxides and hydroxides. Some metals react with cold water, some with hot water, and some with steam.



5. They react with dilute acids to form a salt and evolve
hydrogen gas. However, Cu, Ag, Au, Pt, Hg do not react.
6. They react with the salt solution of metals. Depending on their reactivity, displacement reaction can occur.



7. They act as reducing agents (as they can easily lose
electrons).


 Non-metal

1. Non-metals are electronegative.

2. They react with oxygen to form acidic or neutral oxides.



3. These have covalent bonds.

4.They do not react with water.

5. They do not react with dilute acids. These are not capable of replacing hydrogen.

6. These react with the salt solution of
non-metals.

7. These act as oxidising agents (as they can gain electrons).

Answer 2

Some of the differences between physical properties of metals and non-metals :

<> Lustrous: Metals have lustrous property where as nonmetals don't have this property.

<>Sonorous : Metals produce sounds but not

non metals.

<> Electricity: Metals conduct electricity in them whereas non metals cannot. But graphite can also conduct electricity tho it as an nonmetal.

<>High Melting and boiling points will be found in metals but not in nonmetals.

<>Malleability and ductility properties can be found in metals whereas we don't find it in no metals.

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