* Density is mass per unit volume: Density (ρ) is calculated as mass (m) divided by volume (V): ρ = m/V.
* Compression reduces volume: When you compress a gas, you are essentially reducing the space it occupies. The mass of the gas remains the same, but the volume decreases.
* Decreased volume, increased density: With a smaller volume and the same mass, the density of the gas increases.
In simpler terms: Imagine you have a balloon filled with chlorine gas. If you squeeze the balloon, you are compressing the gas. The same amount of chlorine gas is now in a smaller space, making it denser.
