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DIY Science Experiment #11 - Rock Candy! 

Sharpen up your sweet tooth for this upcoming Valentine’s Day with the magic of science. These homemade sugary treats can make great gifts for that special someone, or you can devour them yourself!  

Materials: A wooden skewer or chopstick, a clothespin, 1 cup of water, 3 cups of sugar, a tall glass or jar

  1. Pour the water into a pan and bring it to a boil (adult supervision needed). Add several drops of food coloring until it is very deep in color (maybe red, or pink).
  2. Pour about 1/4 cup of sugar into the boiling water and stir until it dissolves.
  3. Keep adding more sugar until the water cannot dissolve it anymore. This may take a while. Turn off the heat and allow the solution to cool for 20 minutes.
  4. Hold the wooden skewer vertically, and clip the clothespin on the skewer horizontally. Place the skewer inside the glass jar and make sure it does not touch the bottom. Adjust the clothespin so that it rests on the edges of the glass, keeping the skewer in place. Once you have adjusted it properly, take it out of the jar.
  5. Pour the cooled sugar solution into the jar. Place the skewer back into the glass, making sure that it does not touch the sides and that it hangs straight down the middle.
  6. Do not disturb the glass and sugar crystals will begin to grow in 3-7 days. Then you can enjoy your candy!

How does it work? The water and sugar mixture is a super saturated solution, meaning that the water could only hold the sugar since both substances were very hot. As the water cools, the sugar comes out of the solution, turning back into sugar crystals, and attaches to the skewer.

Photo     Source

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    I’ve gotta try this
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