Candy chromatography is a fun and easy science project that can be done at home or in a classroom. It involves separating the different pigments that make up a candy's color by using a solvent and a piece of filter paper or chromatography paper. The result is a colorful pattern on the paper that can be compared to a reference chart to identify the pigments present in the candy.
To perform a candy chromatography project, you will need a few simple materials:
- Chromatography paper or filter paper
- Solvent (such as water or rubbing alcohol)
- Beaker or container to hold the solvent
- Candy to be tested
- Scissors or a hole punch
- Pen or pencil
- Reference chart (optional)
First, cut a small piece of chromatography paper or filter paper into a narrow strip. Next, use a pen or pencil to make a small mark on the strip about one inch from the bottom. This will be the starting point for the chromatography process.
Next, fill a beaker or container with the solvent of your choice. Place the strip of paper into the solvent, making sure that the starting point is not submerged. Allow the solvent to travel up the strip of paper by capillary action. This can take anywhere from a few minutes to an hour, depending on the type of paper and solvent used.
Once the solvent has traveled to the top of the strip, remove the paper and allow it to dry. Once dry, you should see a colorful pattern on the paper.
To identify the pigments present in the candy, you can compare the colors on the paper to a reference chart. Alternatively, you can use a spectrophotometer to measure the wavelengths of light absorbed by the pigments, which can be used to identify them more accurately.
Candy chromatography is a great way to learn about the science of color and how it is used in everyday products. It is also a fun activity that can be enjoyed by people of all ages.