Question

basic concepts of matter of gases​

Answer 1

Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide).

Answer 2

basic concepts of matter of gases

all gases, according to Avogadro's law. The most important physical properties of gases and their mixtures are pressure, temperature, density, viscosity, internal energy, heat conductivity, and diffusivity. The two properties most usually chosen are temperature and either pressure or density.