Thursday, September 1, 2016

Science Experiment of the Week:
Make Your Own Rock Candy!!!

  • Wooden Skewer or a clean chopstick
  • Clothespin
  • 1 cup of water
  • 2-3 cups of sugar
  • Tall narrow glass or jar
  1. Put the clothespin onto the skewer so that when you put the skewer down into the glass it is about 1 inch from the bottom
  2. Remove the clothespin and skewer and set it aside for now
  3. Pour the water into a pan and bring it to a boil
  4. Pour about 1/4 cup of water into the boiling water, stirring until it dissolves
  5. Keep adding more and more sugar stirring it, until no more will dissolve. As you do this it will take longer and longer for the sugar to dissolve until no more will dissolve
  6. When no more sugar dissolves remove the liquid from the heat and allow for it to cool for at least 20 minutes
  7. After cooling pour the liquid into the glass almost to the top
  8. Place the skewer into the glass making sure it is straight down the middle and doesn’t touch the sides
  9. Place the glass somewhere it will not be disturbed and allow the glass to cool completely
  10. Next be patient the sugar crystals will grow over the next 3-7 days
Tip: If you want colored candy just add food coloring and make sure it is pretty dark

How It works:
Mixing the sugar into the water created a supersaturated solution. This means that the water could only hold the sugar at the high temperature. When the water cools the sugar “comes out” of the solution onto the skewer as sugar crystals. The skewer (and sometimes the glass itself) act as a “seed” that the sugar crystals start to grow on. Enjoy your candy! 😁


"MAKE YOUR OWN ROCK CANDY." ScienceBobcom. N.p., 26 Sept. 2014. Web. 30 Aug. 2016. --Kali Gibson

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