During mr. nye's science class, students were expected to identify various substances using physical properties they could easily measure. mr. nye gave each of the five groups a green, metal cube and asked them to identify what the cube was made of. matt's cube, after 5 trials, had an average density of 7.40 g/cm3 . his group's cube was made of a) aluminum. b) gold. c) nickel. d) zinc.