Question

give a define of gas with example

Answer 1

gas. ... If a sample of gaseous matter, confined to a container of fixed size, is heated, the pressure increases. If thesample is cooled, the pressure drops. If a sample of gaseous matter is placed in a sealed container and then the volume of the container is reduced, the compression heats the gas
ex:oxygen, nitrogen ,argon,cryptom...etc

Answer 2

hola mate.........here is your answer....

Gas is a state of matter in which constituent molecules have a greater intermolecular distance due to weaker intermolecular forces of attraction.......they are having irregular shape and size which changes regularly....
eg. hydrogen , chlorine , CFC

hope u understood ^_^