Elizabeth Hansen
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Oxygen is the most abundant chemical element by mass in the Earth's biosphere, air, sea and land. Oxygen is the third most abundant chemical element in the universe, after hydrogen and helium. About 0.9% of the Sun's mass is oxygen.
May 2, 2024 · Oxygen, a colorless, odorless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide; plants, in turn, utilize carbon dioxide as a source of carbon and return the oxygen to the atmosphere.
Oxygen is one of the most important elements as it is needed by most forms of life to survive on Earth. Oxygen is represented by the Symbol O and Atomic Number 8, is a member of the Chalcogen Group.
Life on Earth now depends on oxygen because all living things need it for respiration and producing energy [1]. Since gaseous oxygen is soluble in water, aerobic bacteria can survive in lakes, rivers, and oceans [1]. Interesting Facts. Oxygen liquefies at -183.0 °C and can cause frostbite after skin contact [8].
Oxygen accounts for about 23% of the atmosphere's mass with pairs of oxygen atoms stuck together to make dioxygen molecules, but it's not just in the air, we breathe. Overall, it's the most abundant element on the earth's surface and the third most abundant in the universe after hydrogen and helium.
Oxygen is a chemical element. It has the symbol O and atomic number 8. It is the third most common element in the universe, after hydrogen and helium. Oxygen is more than a fifth of the Earth's atmosphere by volume. In the air, two oxygen atoms usually join to make dioxygen (O 2), a colourless gas. This gas is often just called oxygen.
Dec 9, 2021 · Questions and answers about oxygen, oxygen therapy and oxygen saturation (oxygen levels)
oxygen, Gaseous chemical element, chemical symbol O, atomic number 8. It constitutes 21% (by volume) of air and more than 46% (by weight) of Earth’s crust, where it is the most plentiful element.
May 21, 2015 · Oxygen is a colorless, tasteless and odorless gas, but liquid oxygen has a distinct blue color. Oxygen makes up about 21% of the air you breathe by volume. Nearly half the Earth’s crust is oxygen by mass. Oxygen is the most abundant element in the human body accounting for 65% of your weight.
Sep 29, 2014 · Fast forward — way forward. The first inkling humans had of the existence of oxygen as an element was in 1608, when Dutch inventor Cornelius Drebbel reported that the heating of saltpeter ...
