Density is mass divided by volume. For an odd shape, lower it into a measuring cylinder and the water rises: the volume of the object is the rise, the final reading minus the start, not the final reading on its own. Divide mass by that displaced volume and the density points to the material. Divide by the whole final reading instead and the answer comes out wrong.
MissionLower the sample, read the displaced volume, and name the metal.Round 1Streak 0Best 0
Dividing mass by the final reading V2 gives a density that is:
displaced volume V2 − V120 cm³
correct density m ÷ (V2 − V1)7.9 g/cm³
trap density m ÷ V23.2 g/cm³
likely materialiron
use the displaced volume, V2 minus V1, never the full reading V2.