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Phases of matter

AP serway notes chp 9

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Chapter 9 Solids and Fluids States of Matter Solid Liquid Gas Plasma Solids Have definite volume Have definite shape Molecules are held in specific locations By electrical forces Vibrate about equilibrium positions Can be modeled as springs connecting molecules More About Solids External forces can be applied to the solid and compress the material In the model, the springs would be compressed When the force is removed, the solid returns to its original shape and size This property is called elasticity Crystalline Solid Atoms have an ordered structure This example is salt Gray spheres represent Na+ ions Green spheres represent Cl- ions Amorphous Solid Atoms are arranged almost randomly Examples include glass Liquid
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