Question

predicting buoyancy with density
if the density of water is 1.0 g/cm³, which of these materials would float in water, based on their densities? check all that apply.
metal\tdensity (g/cm³)
aluminum\t2.64
cork\t0.24
iron\t7.50
lead\t11.34
wax\t0.72
□ aluminum
□ cork
□ iron
□ lead
□ wax

Explanation:

Step1: Recall buoyancy - density rule

Objects with density less than water float.

Step2: Compare densities

Water density is 1.0 g/cm³. Cork density is 0.24 g/cm³ < 1.0 g/cm³ and wax density is 0.72 g/cm³ < 1.0 g/cm³. Aluminum density 2.64 g/cm³ > 1.0 g/cm³, iron density 7.50 g/cm³ > 1.0 g/cm³, lead density 11.34 g/cm³ > 1.0 g/cm³.

Answer:

cork, wax