gas


gas
A state of matterAnything that occupies space and has mass; contrasted with energy. in which a substanceA material that is either an element or that has a fixed ratio of elements in its chemical formula. occupies the full volume of its container and changes shape to match the shape of the container. In a gasA state of matter in which a substance occupies the full volume of its container and changes shape to match the shape of the container. In a gas the distance between particles is much greater than the diameters of the particles themselves; hence the distances between particles can change as necessary so that the matter uniformly occupies its container. the distance between particles is much greater than the diameters of the particles themselves; hence the distances between particles can change as necessary so that the matter uniformly occupies its container.