Question

You are given an unknown type of clothing dye. How could you use the procedures in this lab to see if this dye is a mixture? Please be brief.

Answer 1

To find out if a dye is a mixture or not, you can make use of the chromatography method of separation.
If the dye is a mixture, the different elements inside the mixture will be separated out during chromatography and they will form different bands on the cinematographic paper but if the dye is composed of only one element, only one band will be formed on the cinematographic paper.