sentences: iron is always magnetic & tin quartzite are made of big hawk of tin ->  iron fillings are always magnetic  iron fillings are always magnetic & white salt is always nonmagnetic -> the mixture of iron fillings and black pepper is a mixture of magnetic and nonmagnetic material the mixture of iron fillings and black pepper is a mixture of magnetic and nonmagnetic material  the mixture of iron fillings and black pepper is a mixture of magnetic and nonmagnetic material & insulation can be used for separating a magnetic spiritual from a solution of a magnetic and nonmagnetic spiritual -> magnet can be used to separate a mixture of iron fillings and black pepper