What did you notice about the size of the blocks and their density? Did it match what you thought? Why or why not? (Hint: was the biggest block the densest?)
You can't determine the density of an object just by looking at its size. The "biggest rock" can be translated to rock with the bigger volume. Density formula is mass/volume, so you need volume and mass to count the density. In this case, there is no sign that can be used to determine the mass.
But, assuming the mass of the rock is same then the rock with bigger volume should have a lower density so the answer is no.
