which property is a chemical property of a substance?\no density\no boiling point\no color\no flammability

Brief Explanations:

Chemical properties describe how a substance changes into a new substance during a chemical reaction. Flammability is the ability of a substance to burn, which involves a chemical change (combustion reaction). Density, boiling - point, and color are physical properties that can be observed or measured without changing the substance's chemical identity.

Answer:

D. flammability