Science Buddies
Science Buddies: When Science Is Sweet: Growing Rock Candy Crystals
Though rock candy seems to be a simple enough treat, it is also pretty interesting to make. Crystallized sugar that can be grown from a sugar-water solution is just how rock candy is made. In this experiment, you will learn to make your...
Science Buddies
Science Buddies: Maple Syrup: For Pancakes, Waffles, and Crystal Candy?
Maple syrup is deliciously gooey and great on breakfast foods like pancakes and waffles. But it has another amazing property. It can form crystals under the right circumstances, and the crystals change in size and shape, depending on...
TED Talks
Ted: Ted Ed: How to Squeeze Electricity Out of Crystals
It might sound like science fiction, but if you press on a crystal of sugar, it will actually generate its own electricity. Ashwini Bharathula explains how piezoelectric materials turn mechanical stress, like pressure, sound waves and...
American Museum of Natural History
American Museum of Natural History: Grow Rock Candy
Students can carry out an investigation using sugar and water to determine whether heating or cooling a substance may cause changes that can be observed. This activity reinforces the ideas that the properties of materials can change when...
MadSci Network
The Mad Scientist Network: Chemistry
Using a question and answer format, this page addresses the question: "What effect may crystallization have on the optical properties of a material?" Crystalline and amorphous solids are compared and contrasted; their properties are...
Science Bob Pflugfelder
Science bob.com: Make Your Own Rock Candy!
This concise site provides directions for creating rock candy using a super-saturated sugar water solution. Describes super-saturation following the procedure.
American Chemical Society
Middle School Chemistry: Lesson Plans: Using Dissolving to Identify an Unknown
Students first observe a solubility test between salt and sugar. Next, they design their own solubility test with four known crystals and an unknown to discover the identity of the unknown.
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