Question

1. A solid metallic ball
2. Milk
3. Nitrogen gas present in atmosphere
Which of the following will have maximum density?

• A. 1
• B. 2
• C. 3
• D. Density will be the same for all the three things.

Answer 1

The correct option is A 1

We can see that we have to look for density. But first, we will get the states of all three things.
$1\to solid$ $2\to liquid$ $3\to Gas$
As solids have strong intermolecular forces of attraction, the distance between the particles in solids are very less, therefore density is highest.
If we have more particles in fixed volume, mass will be more and so does density.
In Gases, because of weak intermolecular forces of attraction, the space between the molecules is very large. So, least density.
Now, intermolecular forces of attraction in liquids is generally lesser than in solids.
Therefore, there is more space between molecules in Liquids.
Therefore, lesser density than solids.
But, Liquids have much higher density than gases. In liquids, molecules are quite closely packed. Therefore, their densities are much higher than the densities of gases under comparable conditions.