Question

metal | density (g/cm³)
aluminum | 2.64
cork | 0.24
iron | 7.50
lead | 11.34
wax | 0.72
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.
☐ aluminum
☐ cork
☐ iron
☐ lead
☐ wax

Explanation:

Step1: Recall floating condition

A substance floats in water if its density is less than water's density ($1.0\ \text{g/cm}^3$).

Step2: Compare each density

• Aluminum: $2.64 > 1.0$ → sinks.
• Cork: $0.24 < 1.0$ → floats.
• Iron: $7.50 > 1.0$ → sinks.
• Lead: $11.34 > 1.0$ → sinks.
• Wax: $0.72 < 1.0$ → floats.

Answer:

cork, wax