Sugar Crystal Experiment
Thursday January 1, 2009
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My son is conducting an experiment studying the effect of evaporation on the growth of sugar crystals. One condition has the lid closed on the jar, the second condition has just an open jar, and the third condition has an open jar with a fan blowing on it. In our first attempt we clearly did not add enough sugar to the water, but there clearly was evaporation as the jar with the fan blowing on it had decreased water level. Now we have saturated the water but a crusty layer has formed on top of the water of the two open jars, preventing any evaporation. We have a piece of rock candy tied to the end of the string, and there are no crystals forming on the candy or the string. I feel like we followed the directions very carefully. The experiment has been running for 2 days. Do we need to break up the crusty layer each day? I'm not sure what we have done wrong, as all our research indicates that this is a pretty easy experiment and crystals should be forming rather quickly. Thank you.Do you have helpful advice to offer or are you wondering about the answers to the questions? Stop by the forum and see what's up!
Comments
i love ur project iam doing one to
i love ur project iam doing one 2
My son is doing the project using food coloring. The problem we have is that we cannot get the string out once the crystals form.
thanks good idea tell me which took longer to grow and which took faster.
this is an intereating project i like the way he did it hope everyone else feel the same
I am doing the same rock candy experiment. I have done 3 different recipes I found on line. I did the honey, water, & sugar. I did the karo syrup, water, & sugar. I did just sugar & water. I added flavors and food coloring to some of them. I started the project w/ my daughter last Friday & Saturday. No crystals yet. help