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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 Summary
oxygen, Gaseous chemical element, chemical symbol O, atomic...
- Oxygen Group Element
oxygen group element, any of the six chemical elements...
- Boiling Point
At any temperature a liquid partly vaporizes into the space...
- Liquid Oxygen
Other articles where liquid oxygen is discussed: oxygen...
- Electron Affinity
electron affinity, in chemistry, the amount of energy...
- Potassium Nitrate
Potassium nitrate (KNO3), an ionic white crystalline salt...
- Compressed Air
compressed air, air reduced in volume and held under...
- Oxidation Number
oxidation number, the total number of electrons that an atom...
- Oxygen Summary
3 days ago · Oxygen is a chemical element; it has symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Oxygen is the most abundant element in Earth's crust, and after hydrogen and helium, it ...
May 9, 2024 · noun. The loud hum of his oxygen machine echoed through the courtroom. Some of the oxygen might stay in the ice or escape into the atmosphere. The oxygen in the submersible was set to run out on Thursday morning. When the prosecutors showed that photo in the courtroom, the oxygen left the room.
May 11, 2024 · Combustion combines energetic molecules with oxygen to produce carbon dioxide and water. For example, the equation for the combustion reaction of propane, found in gas grills and some fireplaces, is: C 3 H 8 + 5O 2 → 4H 2 O + 3CO 2 + energy
- Anne Marie Helmenstine, Ph.D.
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May 6, 2024 · An example of a chemical reaction is the burning of methane in the presence of molecular oxygen (O 2) to form carbon dioxide (CO 2) and water. CH 4 + 2O 2 → CO 2 + 2H 2 O In this reaction, which is an example of a combustion reaction, changes occur in the way that the carbon, hydrogen, and oxygen atoms are bound together in the compounds.
May 16, 2024 · Combustion, a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame. Combustion is one of the most important of chemical reactions and may be considered a culminating step in the oxidation of certain kinds of substances.
3 days ago · Oxygen concentrations in the atmosphere remained around or below 0.001% of today's level until 2.4 Ga ago (the Great Oxygenation Event). The rise in oxygen may have caused a fall in the concentration of atmospheric methane, and triggered the Huronian glaciation from around 2.4 to 2.1 Ga ago. In this way, cyanobacteria may have killed off most ...
