Elizabeth Hansen
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Oxygen is a highly reactive nonmetal and the most abundant element in Earth's crust. It forms dioxygen gas, which is essential for cellular respiration and life on Earth, and is also a component of many organic and inorganic compounds.
Jun 25, 2024 · Learn about oxygen, a nonmetallic element essential to living organisms and the most abundant in Earth's crust. Find out how oxygen was discovered, how it forms compounds and allotropes, and how it is used in various fields.
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.
Learn about oxygen, a member of the chalcogen group and an essential element for life on Earth. Find out its chemical and physical properties, uses, isotopes, and allotropes with videos and quizzes.
Learn about oxygen, a chemical element with the symbol O and atomic number 8. Find out its history, properties, uses, and role in living things and the atmosphere.
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 ...
May 21, 2015 · Learn about the discovery, history, isotopes, and uses of oxygen, the eighth element of the periodic table. Find out how oxygen supports life, forms compounds, and affects the atmosphere.
