Oxygen, or O₂, is a colorless, odorless gas and the most common elemental form of oxygen. It makes up approximately 21% of Earth’s atmosphere and is commonly obtained through the liquefaction and separation of air. Essential to life and combustion, oxygen has a melting point of -218.4°C and a boiling point of -183°C.
Oxygen is only slightly soluble in water, with about 30 milliliters dissolving in one liter of water under suitable conditions. In its liquid state, oxygen appears pale sky blue, offering a fascinating example of how this essential element changes under extreme temperatures.
Oxygen is only slightly soluble in water, with about 30 milliliters dissolving in one liter of water under suitable conditions. In its liquid state, oxygen appears pale sky blue, offering a fascinating example of how this essential element changes under extreme temperatures.
