What Is a Crystal? Definition and Examples - Science Notes and …
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WebMar 28, 2020 · A crystal is a form of matter in which the atoms, molecules, or ions are arranged in a highly ordered three-dimensional lattice. Crystals are also called crystalline solids because most crystals are solid. However, liquid crystals also exist. The word “crystal” comes from the Greek word krustallos, which means both “rock crystal” and “ice.”
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