Question

Food colourings contain a mixture of water-soluble dyes. Tell a method to separate the dyes in a sample of food colouring and also explain how this method works.

Answer 1

Scientists use a process called chromatography (kroh-muh-tog-ruh-fee) to separate different parts of a mixture. Dots of the mixtures—different colors of washable markers—are placed on a piece of coffee filter paper.