Candy Chromatography Essay Sample
- Pages: 3
- Word count: 615
- Rewriting Possibility: 99% (excellent)
- Category: water
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Introduction of TOPIC
Paper chromatography is a logical technique used to separate works of a solution. Three examples of how we apply this technique to real-life would be: contaneminants in water, separation of plant pigmentation, and analysis of narcotics.
Purpose: To find out why candies are different colors.
* Materials: Candy with a colored coating, like Skittles® or M&Ms® (4 different colors)
* Rubbing alcohol or isopropyl alcohol
* Coffee filters (2)
* Tall glasses or plastic cups (2)
* Foil or paper plate
* Table salt
* Toothpicks or cotton swabs (4)
* Measuring cups/spoons
* Clean pitcher or 2-liter bottle
Procedure: 1. Cut coffee filter in a square (3cm) (2 strips). 2. Space four drops of water on a piece of foil. Put one candy of each color on the drops. Let it sit for a minute. Throw away candy. 3. Use a pencil (not a pen) to draw a line one cm (1/2 inch)from the edge of one end of the one strip of paper. 4. Make four pencil dots (one of each color used) on the given line about 0.5 (1/4 inch) apart. Label the color of the candy you test on. (Use abrreviations.) Make prediction.
5. Dip toothpick into a sample colored water, dab the color onto the pencil. Repeat using another toothp
ick for the following colors. Allow filter paper to dry, go back and add MORE color to the following
I started to observe a lot once I got into the process of attaching the paper with the dye and setting it on the bottle. I poured in what was asked, and at first, I didn’t think anything was going to happen. I was waiting for the paper to get wet. It required a lot of patience! I realized the purpose was that when it hits the water, you’re going to want to measure how far the streaks go. Even just waiting a minute, I saw a difference. The paper was losing its color. The salt solution percolates faster than the alcohol solution. I looked at the paper that was hanging inside of the alcohol based solution and noticed that the colors weren’t even streaking down. The dye was half way up the paper in the salt part, whereas it looked good as new on the alcohol side. The color separation was very clear. 10-15 minutes, you could see the color rise. Measurements for the watery solution: Red: 23 cm, orange: 21 cm, green: 44 cm, and purple: 29 cm. Observation: water solution, it washed away graphite and the alcohol solution, it almost made it brighter and more clear. Red: 50, orange: 50, green: 24 purple: 44. Alcohol stopped at 55cm. Water stopped at 60cm.
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