Question

Назовите физические свойства кислорода

Answer 1

При комнатной температуре кислород — газ без цвета, запаха и вкуса. Он примерно в  1,1 раза тяжелее воздуха.  

 

При температуре  -183 гр. цел. кислород сжижается и превращается в голубую жидкость, а при  -218 гр. цел. становится твёрдым.

 

Кислород плохо растворяется в воде. При  20 гр. цел. в  1  объёме воды растворяется примерно 3,1 объёма кислорода. Растворимость кислорода, так же как и других газов, зависит от температуры. С повышением температуры растворимость уменьшается.

Answer 2

#### Physical Properties of Oxygen Oxygen is a chemical element with the symbol O and atomic number 8. It is a highly reactive gas and is essential for supporting life on Earth. Here are some of the physical properties of oxygen: **1. State of Matter:** Oxygen is a gas at standard temperature and pressure (STP). It exists as a diatomic molecule, meaning it consists of two oxygen atoms bonded together (O2). **2. Color and Odor:** Oxygen is a colorless and odorless gas. It does not have a distinct smell or taste. **3. Density:** The density of oxygen gas is approximately 1.43 grams per liter at STP. **4. Melting and Boiling Points:** Oxygen has a melting point of -218.79 degrees Celsius (-361.82 degrees Fahrenheit) and a boiling point of -182.96 degrees Celsius (-297.33 degrees Fahrenheit) at atmospheric pressure. **5. Solubility:** Oxygen is sparingly soluble in water. The solubility of oxygen decreases as temperature increases and pressure decreases. **6. Reactivity:** Oxygen is a highly reactive element. It readily combines with other elements to form oxides. This reactivity is the basis for combustion and respiration processes. **7. Paramagnetism:** Oxygen is paramagnetic, meaning it is weakly attracted to a magnetic field. This property arises from the presence of unpaired electrons in its atomic or molecular orbitals. **8. Oxidizing Agent:** Oxygen is a powerful oxidizing agent. It supports combustion and is necessary for many chemical reactions to occur. Please note that the information provided above is based on general knowledge about oxygen. For more specific or detailed information, it is recommended to refer to reliable scientific sources.