Question

which of the following are physical properties of matter? answer: a stability b reactivity c density d flammability

Explanation:

Physical properties of matter can be observed or measured without changing the substance's chemical identity. Density is a physical property as it describes the mass per unit volume ($
ho = \frac{m}{V}$) and doesn't involve a chemical change. Stability (A), reactivity (B), and flammability (D) relate to how a substance interacts chemically, so they are chemical properties.

Answer:

C. density