Metals and Non-Metals : Chemical properties of Metals

 

Chemical Properties of Metals                                                                             

Reaction with oxygen:

Most of the metals form respective metal oxides when react with oxygen.

Metal + Oxygen ⇨ Metal oxide

Examples:

Reaction of potassium with oxygen: Potassium metal forms potassium oxide when reacts with oxygen.

4K + O2 ⇨ 2K2O

Reaction of sodium with oxygen: Sodium metal forms sodium oxide when reacts with oxygen.

4Na + O2 ⇨ 2Na2O

Lithium, potassium, sodium, etc. are known as alkali metals. Alkali metals react vigorously with oxygen.

Reaction of magnesium metal with oxygen:Magnesium metal gives magnesium oxide when reacts with oxygen. Magnesium burnt with dazzling light in air and produces lot of heat.

2Mg + O2 ⇨ 2MgO

Reaction of aluminium metal with oxygen: Aliminium metal does not react with oxygen at room temperature but it gives aluminium oxide when burnt in air.

4Al + 3O2 ⇨ 2Al2O3

Reaction of zinc metal with oxygen: Zinc does not react with oxygen at room temperature. But it gives zinc oxide when heated strongly in air.

2Zn + O2 ⇨ 2ZnO

Reaction of Iron metal with oxygen: Iron does not react with oxygen at room temperature. But when iron is heated strongly in air, it gives iron oxide.

3Fe + 2O2 ⇨ Fe3O4

Iron fillings give sparkle in flame when burnt.

Reaction of copper metal with oxygen: Copper does not react with oxygen at room temperature but when burnt in air, it gives copper oxide.

2Cu + O2 ⇨ 2CuO

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Metals and Non-Metals : Chemical properties of Non – Metals

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