solids and liquids
it is lighter than air, typically found in the upper regions of a confined space
No, liquids do not have a fixed volume - their volume is that of the container
A gas has no fixed volume or shape.
A solid has a fixed volume and does not change shape.
A solid has a fixed volume and form. A liquid has a fixed volume but has the form of a container. A gas has not a fixed volume or form.
Gases adopt the form of the container it contains an hasn't a constant volume.. A liquid adopt the form of the container it contains but has a constant volume. A solid has form and constant volume.
The substance would be in a gaseous state if it had no fixed volume. Gases have no fixed shape or volume and can expand to fill the container they are in.
The phase of matter with no fixed shape but fixed volume is a liquid. Liquids take the shape of their container but maintain a constant volume because the particles are close together but can move past each other.
solid
No.
fixed shape
a solid