Chemical and Biomolecular Engineering

Official blog of the Lehigh University Chemical Engineers

DIY Rock Candy

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In my ChE 31 class about two weeks ago, we were learning about Raoult’s Law and liquid mixture compositions. At one point where we discussed super saturation for solid-liquid mixtures, Prof. Gilchrist was like “and this is how you would make rock candy!” Rock candy has always been one of my favorite types of candies, so I looked up on the internet on how to make rock candy at home. I found out that you have to over saturate sugar in hot water, and let it sit. However, the temperature and the saturation rate of sugar in water also plays a factor in texture and how well you can make your own rock candy. If you are really into making your own rock candy, here’s a video:

Chemistry is sweet!


Author: Jerry Jin

Hello, My name is Jerry Jin. I'm a senior at Lehigh University pursuing a degree in Chemical Engineering. I'm from Allentown, PA, but I was born in Shanghai, China. I moved here when I was fourteen years old. I'm currently the secretary for Southeast Asia at Lehigh Club, and treasurer for SASE. I'm also on the Lehigh Ultimate Frisbee Team and I enjoy being spontaneous.

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