Characteristics of oxygen:
1 Chemical properties: Oxygen is a highly active element that forms compounds with a variety of other elements, such as water (H2O) and carbon dioxide (CO2).
2 Physical properties: At normal temperature and pressure, oxygen is a diatomic molecular gas (O2) with a density slightly greater than that of air.
3 Supports combustion: Oxygen is essential for combustion, and most flames and fuels burn in oxygen.
4 Biological necessity: Oxygen is an essential gas for life activities, used for cellular respiration, converting energy from food into energy that can be used by organisms.
5 Highly reactive: Oxygen can undergo oxidation reactions with a variety of substances, sometimes causing corrosion and discoloration.
Uses of oxygen:
1 Medical: Oxygen is widely used in the medical industry, such as oxygen cylinders supplied to hospitals and emergency vehicles, for the treatment of respiratory diseases and to increase oxygen concentration in the body.
2 Industrial: In industrial production, oxygen is used as a combustion agent for gaseous fuels, used in ore smelting, metal processing, and glass manufacturing.
3 Life: Used for home oxygen therapy, oxygen supply in plateau areas, and gas needs in some special working environments.
4 Scientific research: In laboratory research and scientific experiments, oxygen is a common reagent and component of gas reactions.
5 Aerospace: Oxygen is a necessity for astronauts and pilots to survive and work at high altitudes or in space, and is used to provide breathing gas.
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