Question

Make a comparative account of the physical and chemical properties of metals and non- metals. Record your observations in form of a table.

Answer 1

On the basis of their properties all elements can be divided into :
[tex]\bullet Metals \\\bullet Non metals [/tex]
$\displaystyle\text{physical properties of metals and nonmetals :}$
[tex]\displaystyletext{ Characteristics of Metals :}\\\ [/tex]
⇒Metals are solids at room temperature except mercury 
⇒Metals are malleable.
⇒Metals are ductile.
⇒Metals are good conductors of electricity and heat.
⇒Metals are lustrous.
⇒Metals are usually strong. They have high tensile strength.
⇒Metals are sonorous.
⇒Generally all metals are hard except sodium and potassium.

chemical properties :
⇒Metal reacts with oxygen to form metal oxides .
⇒Metal reacts with water to form hydroxides and hydrogen gas.
⇒Metals reacts with acid to form Salt and hydrogen gas.
except Cu,Au,Ag do not produce H2 gas with dilute acids
⇒Metals reacts with base to form salt and H2 gas.

whereas :
Non metal Physical properties:
⇒Non metals exists at room temperature as solids, liquids and gases.
⇒Non metals are Brittle.
⇒Non metals are not ductile
⇒Non metals are poor conductors of heat and electricity
⇒Non metals are not lustrous   except Iodine and Diamond
⇒Non metals are not strong.
⇒Most of the solid non metals are quite soft.
⇒Non metals are not sonorous.

chemical properties of Non metals:
⇒Non metals Reacts with oxygen to form non metal oxides .
⇒Non metals do not react with water.
⇒Non metals do not react with dilute acids.
⇒Some non metals reacts with bases like NaOH.

Answer 2

Explanation:

On the basis of their properties all elements can be divided into :

\begin{lgathered}\bullet Metals \\\bullet Non metals\end{lgathered}

∙Metals

∙Nonmetals

\displaystyle\text{physical properties of metals and nonmetals :}physical properties of metals and nonmetals :

⇒Metals are solids at room temperature except mercury

⇒Metals are malleable.

⇒Metals are ductile.

⇒Metals are good conductors of electricity and heat.

⇒Metals are lustrous.

⇒Metals are usually strong. They have high tensile strength.

⇒Metals are sonorous.

⇒Generally all metals are hard except sodium and potassium.

chemical properties :

⇒Metal reacts with oxygen to form metal oxides .

⇒Metal reacts with water to form hydroxides and hydrogen gas.

⇒Metals reacts with acid to form Salt and hydrogen gas.

except Cu,Au,Ag do not produce H2 gas with dilute acids

⇒Metals reacts with base to form salt and H2 gas.

whereas :

Non metal Physical properties:

⇒Non metals exists at room temperature as solids, liquids and gases.

⇒Non metals are Brittle.

⇒Non metals are not ductile

⇒Non metals are poor conductors of heat and electricity

⇒Non metals are not lustrous except Iodine and Diamond

⇒Non metals are not strong.

⇒Most of the solid non metals are quite soft.

⇒Non metals are not sonorous.

chemical properties of Non metals:

⇒Non metals Reacts with oxygen to form non metal oxides .

⇒Non metals do not react with water.

⇒Non metals do not react with dilute acids.

⇒Some non metals reacts with bases like NaOH.