Question

1. which of the following is a physical property? mark all that apply flammability rusting of iron density reactivity with acid

Explanation:

Physical properties can be observed or measured without changing the substance's chemical identity. Flammability involves a chemical change (burning), rusting of iron is a chemical reaction, and reactivity with acid is a chemical property. Density can be measured without altering the substance chemically.

Answer:

C. Density