Atdp Course
Candy Chromatography
By: Avani Reddy
7th Grade
Introduction Ever wondered why candies are different colors? Ever wondered why candies are different colors? Many candies contain colored dyes. Bags of M&Ms or Skittles contain candies of various colors. The labels tell us the names of the dyes used in the candies. But which dyes are used in which candies? We can answer this by dissolving the dyes out of the candies and separating them using a method called chromatography. Research
Candy Chromatography is the method of analysis of separating and comparing dyes used in candies and food coloring. It is also a proven method to analyze candy and its complex structure, without having to taste it. These complex mixtures can be separated back into pure substances. To find out the ingredients of a favorite candy, chromatography would help to define every ingredient found in the candy sample. The word chromatography is derived from the two Greek words, “Chroma” meaning color and “graphic” meaning to write. Paper chromatography is the best method of separation used in candy chromatography. Paper chromatography is a technique that involves placing a small dot or line of sample solution onto a strip of chromatography paper.. The paper is placed in a jar containing a shallow layer of solvent and sealed. As the solvent rises through the paper, it meets the sample mixture, which starts to travel up the paper with the solvent. This paper is made of cellulose, a polar substance, and the compounds within the mixture travel farther if they are non-polar. More polar substances bond with the cellulose paper more quickly, and therefore do not travel as far.
Hypothesis
The same color candies will have the same colored dyes which are used in making the candy. For example, the green skittle will have a green colored dye used in order to make the skittle.
Experiment Materials 1. M&M or Skittle Candies (1 of each color) 2. Coffee filter paper 3. A tall
By: Avani Reddy
7th Grade
Introduction Ever wondered why candies are different colors? Ever wondered why candies are different colors? Many candies contain colored dyes. Bags of M&Ms or Skittles contain candies of various colors. The labels tell us the names of the dyes used in the candies. But which dyes are used in which candies? We can answer this by dissolving the dyes out of the candies and separating them using a method called chromatography. Research
Candy Chromatography is the method of analysis of separating and comparing dyes used in candies and food coloring. It is also a proven method to analyze candy and its complex structure, without having to taste it. These complex mixtures can be separated back into pure substances. To find out the ingredients of a favorite candy, chromatography would help to define every ingredient found in the candy sample. The word chromatography is derived from the two Greek words, “Chroma” meaning color and “graphic” meaning to write. Paper chromatography is the best method of separation used in candy chromatography. Paper chromatography is a technique that involves placing a small dot or line of sample solution onto a strip of chromatography paper.. The paper is placed in a jar containing a shallow layer of solvent and sealed. As the solvent rises through the paper, it meets the sample mixture, which starts to travel up the paper with the solvent. This paper is made of cellulose, a polar substance, and the compounds within the mixture travel farther if they are non-polar. More polar substances bond with the cellulose paper more quickly, and therefore do not travel as far.
Hypothesis
The same color candies will have the same colored dyes which are used in making the candy. For example, the green skittle will have a green colored dye used in order to make the skittle.
Experiment Materials 1. M&M or Skittle Candies (1 of each color) 2. Coffee filter paper 3. A tall
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