Two samples of aluminum foil, 27 grams and 54 grams, are cut out from a roll. which of the following properties is different for the two? amount of matter color density electrical conductivity

Before answering this question, you must know the concept between extensive and intensive property. The extensive property does not depend on the amount of substance (like mass), which is the opposite of intensive properties. From the given choices, the rest are extensive properties except for amount of matter. Hence, that is the answer.