Question

When a substance is compressed what happens to its density?

Answer 1

The density increases.

Explanation:

We know that density, `rho`, is denoted by `rho=m/V`.

Since, according to Boyle's Law, `Pprop1/V`, as pressure increases, volume decreases.

We also know that `rhoprop1/V`, or `Vprop1/rho`.

By the above, we can say that when volume decreases, density increases.

Therefore, when a gas is compressed its density increases.