An article in the local paper is discussing a new copper mine in New Mexico. It states that all that is needed to identify a substance is the mass and volume of a sample. Is this an accurate statement? Why or why not? Yes, because mass and volume are unique properties of a substance. Yes, because mass and volume allows for finding density, which is a unique property of a substance. No, because although mass is a unique property of a substance, volume is not. No, because only density is a unique physical property of a substance and mass and volume are not enough to find it.