Sugar Crystal Lab

Title:  Does Sugar Grow?

Hypothesis:  (You fill in.)

Materials and Procedure:

  • 3 cups of regular sugar (or any two to one ratio of sugar to water with a smaller jar)
  • 1 cup of water
  • 2 cup (16 oz) glass container that can withstand heat (like a mason jar or empty pickle jar)  Clean it with hot water.
  • thick cotton string
  • pencil
  • clean paper clip
  • plastic wrap or paper towel to cover jar
  1. Cut two pieces of string longer than the height of the jar. Tape them to the pencil and then wind them up until they are about an inch from the bottom of the jar.
  2. Attach a paper clip to the bottom of the string to weigh it down.
  3. Wet your thread and roll it in the sugar. This will give the sugar crystals something to form onto.
  4. Boil the water and then add the sugar a little at a time. Stirring each time until it dissolves.
  5. Pour it into the prepared jar. If you have undissolved sugar at the bottom of your pan, avoid getting it in the jar.You might want to let it cool a bit first. Make sure your string is hanging into the syrup and is off the bottom of the jar.
  6. Cover it with plastic wrap or a paper towel.
  7. Put it aside and leave it covered and undisturbed.
  8. Check on your crystals after a day. You should be able to see the beginnings of crystal growth on the string.