What do we mean by liquids do not fill their container completely ? And
gasss fill their container completely?
The forces of attraction between particles in a liquid are intermediate between solids and gases. These give the liquid a definite volume but not a definite shape. Therefore, a liquid take the shape of the container holding it but only occupies a volume equal to its volume.
The particles of a gas have negligible forces of attraction and hence they have neither a definite shape nor volume. So, they take the shape of a container and occupy all the volume available to them. Also, molecules of a gas move about randomly and thus will spread around and occupy all space available to them and fill up the container completely.
The particles of a gas have negligible forces of attraction and hence they have neither a definite shape nor volume. So, they take the shape of a container and occupy all the volume available to them. Also, molecules of a gas move about randomly and thus will spread around and occupy all space available to them and fill up the container completely.