Question

which of the following are physical properties? a flammable, magnetic b dull, nonmagnetic c flammable, magnetic d dull, flammable

Explanation:

To determine physical properties, we recall that physical properties can be observed or measured without changing the substance's chemical identity. Flammability is a chemical property (involves combustion, a chemical change). "Dull" (appearance) and "magnetic/non - magnetic" (attraction to magnet) are physical properties as they don't involve a chemical reaction.

• Option A: Flammable is chemical, magnetic is physical - incorrect.
• Option B: Dull (physical, appearance) and nonmagnetic (physical, magnetic property) - correct.
• Option C: Same as A, flammable is chemical - incorrect.
• Option D: Dull is physical, flammable is chemical - incorrect.

Answer:

B. Dull, nonmagnetic