What is Inert gas?
An '''inert gas''' is a [[gas]] that does not usually react chemically with other things. Examples of inert gases are [[nitrogen]] (N2) and [[helium]]. An inert gas made of separate [[atom]]s of one element is called a [[noble gas]]. Inert gases can also be made of more than one atom together. They can be gases of [[molecule]]s or mixtures of gases of elements. Inert gases are used in several ways. A gas made from nitrogen is used to keep vegetables from spoiling when they are transported. Other inert gases are used in [[welding]]. They are put into [[gasoline]] tanks to help prevent explosions. {{sci-stub}} [[Category:Gases]]