![]() In the rock candy, the liquid is water and the compound is sugar. ![]() This happens when a solution, which is made up of a liquid and the compound that will be crystallized, is saturated. ![]() So how do the molecules of a substance get together to form a crystal? First there have to be enough molecules in one area that they have a high chance of bumping into one another. As you add more spheres, the bottom of the tray becomes covered, then the spheres must form layers on top of one another, and a structure or pattern emerges. Molecules are too small for us to see moving around and arranging themselves, but you can get a rough idea of what this would look like by taking a small shallow tray and filling it with marbles, ball bearings, or other spheres. As a solid it can either be amorphous, without shape, like when it forms cotton candy, or crystalline, with a highly ordered structure and shape, like when it forms rock candy crystals.Ĭrystals form when the smallest particles of a substance, the molecules, arrange themselves in an orderly and repetitive pattern. ![]() ![]() Sugar, like many other materials, can come in many different physical states. Have you ever looked at rock candy and wondered how it's made? Rock candy is actually a collection of large sugar crystals that are "grown" from a sugar-water solution. ![]()
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