If the density of an object is affected by its mass, then <u>osmium</u> will have the highest density and <u>hydrogen</u> will have the lowest density
Density = mass/volume or <em>D = m</em>/<em>V
</em>
If we hold <em>V</em> constant, we can write <em>D = km</em>. where <em>k</em> = 1/<em>V</em>.
Thus, D ∝ <em>m</em>. As the <em>mass</em> of a fixed volume of a substance <em>increase</em>s, the <em>density increases</em>.
The mass of H₂ in 1 cm³ 0.080 g. The mass of Os in 1 cm³ is 22.6 g.
However, there are substances with even higher densities. For example, the material at the centre of a neutron star is so dense that 1 cm³ of the material has a mass of 10¹² kg!