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different reactions of metals and non metals
Metals : Elements which form positive ions by losing electrons are metals .
 Examples are iron,copper,tin,silver

Non metals : Elements which form negative ions by gaining electrons are nonmetals .
Examples are sulphur, phosphorus

Reactions of metals with Oxygen :Oxygen reacts with metals to produce oxides .
Example: Magnesium reacts with oxygen to produce Magnesium oxide .
                

Reactions of nonmetals with Oxygen: Oxygen reacts with non metals to produce oxides.
Example :    Sulphur reacts with oxygen to produce sulphurdioxide .
                                          
Reactions of metals with water  : Metals reacts with water to form oxides or hydroxides and hydrogen   
 Example : sodium,potassium and calcium react with water giving of a lot of heat .
                                    
Non metals do not react with water .

Metals react with dilute hydrochloric acid and sulphuricacids to form the corresponding salt and  liberate hydrogen
 Example:  Sodium reacts with hydrochloric acid  to form sodiumchloride and hydrogen
                  
Non metals do not react with dilute acids .


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