Now, that means if you allow single gas molecule to travel from New York to California without being interrupted, it would take it about 3 hours to get there versus a car that would take days and days. And so, because of this high speed, they feel very little force from other gas molecules and that means very little intermolecular bonding. Remember, the reason water is held together or any other solid is due to intermolecular bonding between the molecules. Now, in gas molecules we don't have that because the molecules move at high speeds when they pass each other, they don't really feel too much force, so they don't bond. Let's look at the second thing. So gases are compressible and that's because they take up much less volume than the volume of the container they are in.