To determine the correct statement about the properties described for the substance, we need to understand the nature of each property.
Property A: The ability to be hammered into a flat sheet. This property is known as malleability. Malleability is a physical property because it describes how the substance behaves when a force is applied, without altering its chemical structure.
Property B: The density of the substance is one-third of the density of iron. Density is a measure of mass per unit volume. It is also a physical property because it describes an inherent characteristic of the substance that does not involve a chemical change.
Thus, both properties A and B are physical properties.
Therefore, the true statement about the two properties described in the table is:
Both are physical properties.