#gas properties

• Aeriform — Having the form, properties, or appearance of air; a physical state of matter characterized by the lack of a definite shape and a fixed volume, showing a natural tendency for indefinite expansion. In modern scientific terminology, the term is used as a refined synonym for the gaseous state, describing substances whose molecules have high kinetic energy and minimal cohesion.
• Nitrogen — A gaseous chemical element, colorless, odorless, and tasteless, with atomic number 7 and symbol N, constituting approximately 78% of the Earth's atmosphere by volume; it is a fundamental component of amino acids, proteins, and nucleic acids, essential for all living organisms and widely used in industry in liquid form as a cryogenic agent or within chemical fertilizers.