Answer
A gas expands to fill space but it does not have a shape or volume without a container. However, solid has particle packed together tightly thus they always has a definite shape and volume and can maintain its shape without the use of a container.
Work Step by Step
A gas has particles that are free to move and are not tightly packed. Gas expands to fill space but it does not have a shape or volume without a container because the particles are spaced far apart. However, solid has particle packed together tightly thus they always has a definite shape and volume and can maintain its shape without the use of a container.
