Question

why are the densities of gases lower than that of liquids​

Answer 1

Answer:

This is because the particles are tightly packed in both states. The same number of particles in a gas spread further apart than in the liquid or solid states. The same mass takes up a bigger volume . This means the gas is less dense.

Answer 2

Answer:

The same number of particles in a gas spread further apart than in the liquid or solid states. The same mass takes up a bigger volume . This means the gas is less dense.

Explanation:

Suppose you take equal mass of solid liquid and gas.

Now, the volume occupied by gases is more as compared to liquid and the volume occupied by liquid is more as compared to solids. This is because of intermolecular forces of attraction. The forces are most in solids making them to take less space while gases has least forces and occupy maximum space (or volume).

Now, density = mass ÷ volume.

This means that density is inversely proportional to volume. More is the volume, less is the density and vice versa.

So, gases with maximum volume has least densities, followed by liquids and then solids.