Chemistry
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What are crystalline and amorphous solids?
Compare crystalline and amorphous solids based on shape, arrangement, and properties.
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Crystalline solids have a regular arrangement of particles and sharp melting points (e.g., NaCl, quartz). Amorphous solids lack long-range order, soften over a range of temperatures, and are called "supercooled liquids" (e.g., glass, plastic).
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