Density

\rho = \frac{m}{V} = \frac{80}{100} = 0.8\,\text{g/cm}^3

Object density0.80 g/cm³

Relative density (to water)0.80

BehaviourFloats

Fraction submerged80%

Mass80 g

Volume100 cm³

Make the object float
Make the object sink
Get exactly half (50%) of a floating object submerged
With the fluid set to vegetable oil, find a density that would float in water but sinks here
Match the object’s density to mercury (13.6 g/cm³) for neutral buoyancy