Final answer:
If you had 1 cm3 of each metal, iron and lead, the piece of lead would have a greater mass because it has a higher density (11.4 g/cm3) compared to iron (7.86 g/cm3).
Step-by-step explanation:
The density of a substance is defined as its mass per unit volume. This is a common concept in physics and chemistry that is often used to compare different materials.
When comparing the densities of iron and lead, we can see that iron has a density of 7.86 g/cm3, while lead has a higher density of 11.4 g/cm3. Given this information, if we have 1 cm3 of each metal, the piece of lead would have a greater mass than the piece of iron because the density of lead is higher.
The calculation of the mass of each cubic centimeter is straightforward: mass = density × volume. Since the volume is the same (1 cm3), the metal with the higher density will have the greater mass. Therefore, our answer is 2) Lead.