Activity
Science Buddies

Science Buddies: When Science Is Sweet: Growing Rock Candy Crystals

For Students 3rd - 5th
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...
Activity
Science Buddies

Science Buddies: Maple Syrup: For Pancakes, Waffles, and Crystal Candy?

For Students 6th - 8th
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...
Unit Plan
TED Talks

Ted: Ted Ed: How to Squeeze Electricity Out of Crystals

For Students 9th - 10th
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...
Activity
American Museum of Natural History

American Museum of Natural History: Grow Rock Candy

For Students 2nd - 5th
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...
Handout
MadSci Network

The Mad Scientist Network: Chemistry

For Students 9th - 10th
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...
Activity
Science Bob Pflugfelder

Science bob.com: Make Your Own Rock Candy!

For Students 3rd - 5th
This concise site provides directions for creating rock candy using a super-saturated sugar water solution. Describes super-saturation following the procedure.
Lesson Plan
American Chemical Society

Middle School Chemistry: Lesson Plans: Using Dissolving to Identify an Unknown

For Teachers 9th - 10th
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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