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1. Nitrogen gas and Oxygen gas
By Mohammad Ibrahim
8-D

2. Nitrogen gas:
Nitrogen is essential to life on Earth. It is a component of all proteins and it can be foundin all
living systems. Nitrogen compounds are present in organic materials, foods, fertilizers, explosives
and poisons. Nitrogen is crucial to life, but excessing it can also be harmful to the environment.
The atmosphere is made up of approximately 78%
Nitrogen. It makes up more than ¾ of the gases in the atmosphere.
In it’s gas form, nitrogen is colourless and odorless.

3. Nitrogen is a chemical element with symbol N and atomic number 7. It was first discoveredand
isolated by Scottishphysician Daniel Rutherford in 1772. Electrons per shell= 2,5. Its Boiling point: -
195.8 °C, its Melting point: -210 °C.
Nitrogen Liquid Nitrogen The electrons

4. Uses of nitrogen:-
Besides making up 78% of the Earth's atmosphere,
nitrogen has a number of uses. Since it is an inert gas(An
inert gas is a gas which does not undergo chemical
reactions under a set of given conditions), it can be used to
replace air and reduce or eliminate oxidation of materials.
The most important use is in creating ammonia, which in
turn is used to make fertilizer, explosives and other

5. Applications of Nitrogen
Nitrogen provides a blanketing for our atmosphere for the production of chemicals and electronic
compartments.
Nitrogen is usedas fertilizer in agriculture to promote growth.
Pressurizedgas for oil.
Refrigerant (such as freezing food fast)
Explosives.
Metals treatment/protectant via exposure to nitrogen instead of oxygen

6. Liquid nitrogen
Liquid nitrogen is nitrogen in a liquid state at an extremely low temperature. It is a
colorless clear liquid with a density of 0.807 g/ml at its boiling point (−195.79 °C
(77 K; −320 °F)). Liquid nitrogen, which has a boiling point of -196C, is used for a
variety of things, such as a coolant for computers, in medicine to remove unwanted
skin, warts and pre-cancerous cells, and in cryogenics, where scientists study the
effect of very cold temperatures on materials.

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8. Oxygen
Atomic Number: 8
Atomic Weight: 15.9994
Melting Point: 54.36 K (-218.79°C or -361.82°F)
Boiling Point: 90.20 K (-182.95°C or -297.31°F)
Density: 0.001429 grams per cubic centimeter
Phase at RoomTemperature: Gas
Element Classification: Non-metal
Color: colorless
Period Number: 2 Group Number: 16 Group Name: Chalcogen
Oxygen

9. Oxygen
Oxygen is a chemical element with symbol O and atomic number 8. It makes 21% of the
atmosphere. It is a member of the chalcogen group(elements in group 6) on the periodic table
and is a highly reactive nonmetal and oxidizing agent that readily forms oxides with most
elements as well as other compounds.

10. Facts
Date of
Discovery: 1774
Discoverer: Joseph
Priestly
Name Origin: From
the Greek
words oxus (acid)
and gennan (generate)
Uses: supports life
Obtained From: from
liquid air.
Atomic
structure:-
Number of
Energy
Levels: 2
First Energy
Level: 2
Second
Energy
Level: 6

11. Applications of oxygen:-
Medical:-
Uptake of O2 fromthe air is the essential purpose of respiration, so oxygen
supplementation is used in medicine. Treatment not only increases oxygen levels in the
patient's blood, but has the secondary effect of decreasing resistance to bloodflowin
many types of diseased lungs, easing work load on the heart.

12. Life support and recreational use
Low pressure pure O2 is usedin space suits.
An application of O2 as a low-pressure breathing gas is in modern space suits, which surround
their occupant's body withpressurized air. These devices use nearlypure oxygen at about one
thirdnormal pressure, resulting in a normal bloodpartial pressure of O2.

13. Usage in the Industry:-
Industries use the gas for cutting, welding and melting metals.
gas is capable of generating temperatures of 3000 C and 2800 C.
This is required for oxy-hydrogen and oxy-acetylene blow
In gas cutting, the oxygen must be of high quality to ensure a
cutting speed and a clean cut.