Oxygen | Descriptions, Chemical and Physical Properties, Uses & Facts

Oxygen | Descriptions, Chemical and Physical Properties, Uses & Facts

Unveiling Oxygen: The Breath of Life

Oxygen, an elemental cornerstone of life, holds a pivotal role in our atmosphere and biological processes. This blog delves into the various facets of oxygen, ranging from its fundamental characteristics to its diverse applications.

Oxygen Elemental Essence:

Chemical Formula:

Oxygen is represented by the chemical symbol **O**. It's the third-most abundant element in the universe and the most abundant element on Earth.

Atomic Number and Atomic Mass:

Atomic Number: 8

Atomic Mass: Approximately 16.00 atomic mass units

Chemical and Physical Properties:

Chemical Nature:

Oxygen is a diatomic molecule, meaning it typically exists as O2. It forms compounds with almost all other elements, and some of its notable compounds include water (H2O), carbon dioxide (CO2), and various oxides.

Physical State:

  • Standard State: At room temperature and pressure, oxygen exists as a colorless, odorless, and tasteless gas.
  • Boiling Point: Oxygen becomes a pale blue liquid at extremely low temperatures, with a boiling point of -183 degrees Celsius (-297 degrees Fahrenheit).

Uses & Facts:

Life Sustaining Gas:

Oxygen is crucial for the survival of aerobic organisms, including humans. It is vital for cellular respiration, the process through which cells generate energy.

Medical Applications:

  • Respiration Support: Oxygen is administered in medical settings to assist patients with respiratory issues.
  • Oxygen Therapy: Used to treat conditions such as hypoxia and chronic obstructive pulmonary disease (COPD).

Industrial and Scientific Uses:

  • Welding and Cutting: Oxygen supports combustion, making it essential for processes like welding and cutting.
  • Laboratory Experiments: Widely employed in laboratories for various experiments and analyses.

Liquid Oxygen:

Liquid oxygen is the cryogenic form of oxygen, used in rocket propulsion and medical applications. It is stored at extremely low temperatures to maintain its liquid state.

Active Oxygen:

Active oxygen species, such as singlet oxygen and superoxide, play roles in biological processes and can have both beneficial and harmful effects on living organisms.


Oxygen-18, an isotope of oxygen, is used in scientific research, particularly in studies related to climate and paleoclimatology.

Water Oxygen:

Oxygen is a key component of water (H2O). The oxygen atoms in water molecules are essential for sustaining aquatic life and various ecological processes.

Production of Oxygen on Earth:

Oxygen is primarily produced on Earth through photosynthesis, a process carried out by plants, algae, and certain bacteria. During photosynthesis, these organisms convert carbon dioxide and water into glucose, releasing oxygen as a byproduct. This process not only sustains life but also maintains the delicate balance of gases in the Earth's atmosphere.


In conclusion, oxygen, with its life-sustaining properties and diverse applications, stands as a testament to the intricate interplay between chemistry, biology, and the natural world. From the air we breathe to the stars that dot the cosmic expanse, oxygen's influence is omnipresent and indispensable.

Also Read:

Nitrogen | Descriptions, Chemical and Physical Properties, Uses & Facts

Beryllium | Descriptions, Chemical and Physical Properties, Uses & Facts

Hydrogen | Difference between Blue and Green Hydrogen | Hydrogen Fuel

Resolver (Electrical) | Rotary Electrical Transformer | What is the purpose of a resolver?

Full Authority Digital Engine Control (FADEC) System Description & Operation

Post a Comment