States of matter Common States of Matter Liquids
In a 'liquid', molecules are attracted to other molecules strong enough to keep molecules in contact, but not strong enough to fix a particular structure. The molecules can continually move with respect to each other. This means that liquids can flow smoothly, but not as smoothly as gases. Liquids will tend to take the shape of a container that they are in. Liquids are generally less dense than solids, but denser than gases.