Oxygen is a gas that humans need to breathe in order to live. Air is a mixture of gases, including oxygen, that we need to breathe in order to live.
What is Air?
Air is a colorless, odorless, tasteless mixture of gases that make up the Earth’s atmosphere. The primary constituents of air are nitrogen (78%), oxygen (21%), and argon (0.9%). Water vapor usually accounts for less than 1% of air, but its concentration can vary widely depending on location and weather conditions. Although air is often thought of as being “empty,” it actually contains a wide variety of suspended particles, including dust, pollen, and spores. Air is essential for life on Earth, as it helps to regulate temperature and provides a vital source of oxygen for plants and animals.
In addition to its role in supporting life, air also plays an important role in the water cycle. Evaporation from the oceans provides water vapor for the atmosphere, which eventually condenses into clouds and falls back to the surface as precipitation. This cycle is essential for maintaining the Earth’s water supply. air is also a major factor in weather and climate. Together with the sun’s energy, air currents help to drive global weather patterns.
What is Oxygen?
Oxygen is a transparent, odorless gas that makes up about 21% of the Earth’s atmosphere. Although it is a relatively simple molecule, oxygen plays a vital role in the operation of virtually all known forms of life. In plants, oxygen is produced during photosynthesis, and it is used by animals for respiration.
Oxygen is also an important component of many industrial processes, including welding, combustion, and chemical production. Given its widespread importance, it is not surprising that oxygen was one of the first elements to be identified by scientists. In fact, its discovery predates the development of the modern scientific method by centuries.
Difference between Air and Oxygen
Though air and oxygen are both gases, they are not the same thing. Air is a mixture of many different gases, including oxygen, nitrogen, and carbon dioxide. Oxygen makes up about 21 percent of air by volume. By contrast, oxygen gas is a pure substance that consists only of molecules made up of two oxygen atoms bonded together.
Because it does not contain any other types of atoms, oxygen gas is much more reactive than air. For example, it will support combustion reactions, such as the burning of a candle, but air will not. In general, pure substances like oxygen gas are more chemically active than mixtures like air because they are composed of identical molecules that interact with each other in predictable ways. As a result, oxygen gas has very different properties from air.
Air is made up of about 78% nitrogen and 21% oxygen. Oxygen is a colorless, odorless gas that makes up about 20% of the air we breathe. It is necessary for human life because it helps to break down food in the body to release energy. When you breathe in, the oxygen molecules travel through your nose and throat and into your lungs. There, they travel through tiny air sacs called alveoli and attach to red blood cells. The red blood cells then carry the oxygen throughout your body. In each lung, there are billions of these alveoli.