Posted by: katlea611 | August 18, 2014

Science Experiment: Rock/Sugar Crystals

We did this experiment a month ago.  It’s quite easy to do.  Anyway, you can find so many websites on making rock candy or sugar crystals.  Just take your pick.  Remember though that true to science, experiments are always a trial and error thing.  So, if it doesn’t work the first time, don’t be discouraged.  Talk to your kids about what might have gone wrong then try it again. You may get better results the second time. 🙂

Anyway, for our experiment, this is what we did.  First, we mixed some white sugar with very hot (adult supervision needed!) water and stirred until all sugar crystals were dissolved.  Then, we divided the solution into 3 parts and put them in glass jars.  We then put different colored dyes (we used food dyes) to make the crystals colorful.  After that, we put barbeque sticks into the solution and secured them with clothespins (you can see this in the photos).  Then, we left them on the shelf.  The instructions we got said that we should leave them for a few days but we didn’t notice any crystals formed at this time so we decided to leave them for 2 weeks and voila! we got crystals!  And they were beautiful!

Some problems we encountered during the experiment were: 1. the sugar crystals did not stick to our bbq sticks (I suppose we should have roughened the sticks more so the crystals would adhere to them but it was no biggie) and 2. we should have added more food dye to the solution so the crystals would have been more colorful.

Other than these very minor problems, our experiment was I should say, a success.  The boys were fascinated with the crystals and we looked at them close up.  We tried the sugar crystals too.  Not bad.  Maybe next time we’ll add some mint flavor. 🙂

See the boys in action:


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