4. in order to decide whether a property is chemical or physical, you must know whether a. chemical or physical changes occur when the property is measured b. the property is extensive or intensive c. the property is intrinsic or extrinsic d. the property involved energy or matter

The answer is the property involved energy or matter...D

The components required for the electrolysis of molten NaCl are a source of electrical energy such as a battery and electrodes (anode and cathode). Electrolysis is the process of decomposing and electrolyte (either and aqueous solution or molten solution) by passing an electric current through it. During electrolysis the positive ion moves to the negatively charged electrode (cathode), while the negatively charged ions go to the anode.