Reaction of Metals with Oxygen

Metals react with Oxygen to produce metal oxide.

It is basic in nature

reaction-of-metals-with-oxygen.jpg

Reaction of Iron with Moist Air

reaction-of-iron-with-moist-air.jpg

 

Reaction of Copper with moist air

reaction-of-cooper-with-moist-air.jpg

 

Reaction of Non-Metals with Oxygen

Non Metals react with oxygen to Produce Non Metal Oxide

It is acidic in nature

Example

reaction-of-non-metals-with-oxygen.jpg

 

Note-

Why is Phosphorus not kept in open?

Phosphorus is a very reactive non metal.If it is kept in open air it will react with oxygen and catch fire.

Thus,Phosphorus is kept in water containers

 

Questions

NCERT Question 6 (d) -

Give reasons for the following :

(d) Sodium and potassium are stored in kerosene.

View Answer

 

NCERT Question 10 -

Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.

(a) How will she find the nature of the gas ?

(b) Write down word equations of all the reactions taking place in this Process

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  1. Class 8
  2. Chapter 4 Class 8 - Materials : Metals And Non-Metals

Transcript

Reaction of Metals with Oxygen Metal + Oxygen Metal Oxide This is Basic in nature Example Magnesium + Oxygen (Mg) (O2) Magnesium Oxide (MgO) This Magnesium oxide is Basic in nature It turns red litmus paper blue Reaction of Iron with Moist air Iron + Oxygen + Water Iron Oxide (Fe) (O2) (H2O) (Fe2O3) Air with Moisture This is Rust This is basic in nature Reaction of Copper with Moist air Copper + Water + Carbon Dioxide + Oxygen Copper Hydroxide + Copper Carbonate (Cu) (H2O) (CO2) (O2) (Cu (OH)2) (CuCO3) Moist air This is the green coating deposited on surface of copper vessels This is basic in nature Reaction of Non-Metals with Oxygen Non-Metal + Oxygen Non-Metal Oxide This is Acidic in nature Example Sulphur + Oxygen Sulphur dioxide (S) (O2) (SO2) This Sulphur dioxide is Acidic in nature It turns blue litmus paper red

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.