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Layne's Rock Candy Experiment

Step by Step Presentation

Joy Peacock

on 19 October 2015

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Transcript of Layne's Rock Candy Experiment

My Rock Candy Experiment
Step by Step

by Layne Peacock

Step One
Prepare all your materials. Wash out the glass jar with warm water and dry it. Then cut a string 1 or 2 inches longer than the glass jar and tape it to a pencil or skewer. To weigh down the string, tie a small metal washer to the end of the string. Make sure your string hangs an inch away from the bottom of the jar.
Step 2
Pour some granulated sugar on a flat plate. Then wet your string and roll it in the sugar. Insert your string back into the jar.
Step 3
Take a medium-sized pot, fill it with water, and boil it on the stove. When the water boils add the sugar, one or two cups at a time.
Rock Candy
Super Saturated Solution
Step 4
If you are adding food coloring, add 2-3 drops of the color you want. If you are adding flavoring extract, add 1 tsp and 1/2 tsp for flavoring oils.
Step 5
Let the hot supersaturated solution cool down for about ten minutes in the pot. Then take out the string out from the jar, pour the mixture in the jar, and place the string back in the jar.
Step 6
Place the jar in a cool place away from bright lights and cover the top with plastic wrap or a paper towel.
2 cups of water
4 cups of granulated sugar
1/2-1 tsp of flavoring extract or oil (optional)
Food coloring (optional)
Glass jar
Wooden skewer or pencil
Small washer
Medium-sized pot
Metal spoon
Measuring cups
There are crystals of sugar all the way down the string, but not as many as I expected. Even though I put green food coloring in the mixture, the crystals of sugar are not really green.
My experiment achieved its purpose and made rock candy! The water became saturated with the sugar and formed a supersaturated solution. The water acted as the solvent and the solute was the sugar in the mixture. After two weeks, sugar crystals formed on the string.
Keys to Success
Choose a good recipe
Followed the instructions
Used the right ingredients
Waited the right amount of time
Solution and jar were in the right conditions during the experiment
Crystals formed on the string to make rock candy.
Full transcript