Why Does Gas Have Lower Density Than Liquids?


Quick Answer

Gas has a lower density than liquids because it is not compressed as tightly as liquids, meaning there are fewer atoms per unit of volume. In a liquid, atoms are free to move but remain closely associated, while in a gas, atoms have lots of free space between one another.

Continue Reading
Related Videos

Full Answer

Note that while the densities of both liquids and gases can vary with temperature and pressure, the density of a gas is always considerably lower than that of a liquid. Also, with significant pressure, a gas can be forced to condense into a liquid. One tool that explores the relationship between temperature, pressure and the phase of a substance is a phase diagram.

Learn more about States of Matter

Related Questions