What is definition of gas?

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).

(Entry 1 of 2) 1 : a fluid (such as air) that has neither independent shape nor volume but tends to expand indefinitely. 2a : a combustible gas or gaseous mixture for fuel or lighting especially : natural gas.

Gas is defined as an air-like substance that expands to fill the space it is in. It also refers to a substance used as fuel. An example of gas is helium. An example of

The Gas State · its volume is not fixed; it will expand to fill a container - unlike solids and liquids · it is compressible - its volume changes when pressure changes -

A gas is any substance that is neither liquid nor solid, for example oxygen or hydrogen. Helium is a very light gas.a huge cloud of gas and dust from the volcanic