Step-by-step explanation:
A property that does not bring any change in chemical composition of a substance are known as physical properties.
For example, change in shape, size, mass, volume, density, solubility etc are all physical properties.
So, when we crush a large sample of solid calcium sulfate into smaller pieces for testing then their density and solubility will remain the same. But their size and shape will definitely change.
As density is the mass divided by volume. Total mass of solid calcium sulfate is not changed during the testing. Hence, it will remain the same in a given volume.
Thus, we can conclude that two physical properties are the same for both the large sample and one of the smaller pieces is that their solubility and density.