In the second way, density implies compactness of molecules.
If not constituted of atoms or molecules there is nothing descriptive that can be said about it.
In liquids, such as water, the molecules do not pull nearly so hard on each other.
Then the molecules are arranged more as shown in Figure 108.
The molecules that have shot off into the air make up the water vapor.
As the molecules of any liquid bounce around, some get hit harder than others.
There are no molecules to speak of in that whole vast distance.
Love is perhaps a fermentation of the molecules of the imagination.
All we have to do is cause the molecules to move in a direction opposite to the rotation.
In a liquid the molecules of the liquid cling together loosely.