Question

define oxygen and its use

Answer 1

Oxygen is part of our atmosphere. It is about 20% present in our environment. Oxygen play a important role in our life without it we can't survive on Earth or any other place in the whole universe and it is also used for fuel in fire without oxygen we can't produce fire.

Answer 2

HELLO MY DEAR FRIEND

OXYGEN - OXYGEN IS VERY USEFUL TO BURN ANY THING. IF OXYGEN
                   IS NOT THERE ANYTHING CANNOT BURN.OXYGEN IS
                   COLOUR LESS GAS. THE PERCENTAGE OF OXYGEN IN THE 
                    ATMOSPHERE 21%

THE OXYGEN GAS IS FIRST DISCOVERED BY JOSEPH PRIESTLEY IN THE YEAR 1774. 

THE OXYGEN NAME WAS GIVEN BY THE LAVOISIER. WHO PROVED THAT OXYGEN GAS IS AN ELEMENT. 

THE CHEMICAL FORMULA FOR OXYGEN -
2HgO --------> 2Hg + O2
         ( heat) 

WHEN MERCURIC OXIDE IS HEATED IT GETS BLACK COLOUR MERCURY AND RELEASE IN COLOURLESS GAS. WHICH IS CALLED OXYGEN.

OXYGEN IS VERY IMPORTANT FOR ALL LIVING THINGS. LIKE - HUMANS, PLANTS, ANIMALS.

USES OF OXYGEN GAS -

OXYGEN SUPPORTS ALL THE ANIMALS AND PLANT LIFE TO SURVIVE ON THE EARTH.
OXYGEN HELP'S TO BURN THE THINGS AND PRODUCE HEAT ENERGY.
OXYGEN IS USED TO KEEP THE WATER FRESH BY DISSOLVING THE OXYGEN IN IT/ WATER.

OCCURRENCE  OF OXYGEN - 

OXYGEN EXIST OR OCCUR IS GASEOUS STATE IN THE AIR AND IN LIQUID STATE IN THE WATER AND AS ROCKS IN EARTH CRUST ( THE OTTER LAYER OF THE EARTH).

> KMnO4 ---------> KMnO2+O2

BY POTASSIUM PERMANGANATE ALSO THE OXYGEN IS PREPARED.

I HOPE THIS WILL HELP'S U..............*-*

# SWETHAPAVS #