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Solids and Liquids

Solids and Liquids. By Ryan Dolinsky and Dave Manion. Properties of Solids. Molecules held close together Intermolecular forces lock molecules in place Not compressible because the atoms have little free space. Crystalline Solids. Characteristic geometric shape Sharp melting point

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Solids and Liquids

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  1. Solids and Liquids By Ryan Dolinsky and Dave Manion

  2. Properties of Solids • Molecules held close together • Intermolecular forces lock molecules in place • Not compressible because the atoms have little free space

  3. Crystalline Solids • Characteristic geometric shape • Sharp melting point • Physical Properties are different in different directions (Anisotropy)

  4. Amorphous Solids • No definite geometrical shape • Melt over a wide range of temperature • Physical Properties are the same in different directions (isotropic)

  5. Summary of Solids • Retain their own shape and volume • Virtually incompressible • Do not flow • Diffusion within a solid occurs extremely slowly

  6. Liquids • Properties • Assumes shape of the portion of the container it occupies • Does not expand to fill container • Virtually incompressible • Flows readily • Diffusion within a liquid occurs slowly

  7. Intermolecular Attractive Forces • Strong enough to hold molecules close together • Causes liquids to be more dense and far less compressible than gases • Have a definite volume • Attractive forces are not strong enough to prevent molecules from moving pass one another • Explains how liquids can be poured and fill containers

  8. Determining States • Depends on balance between kinetic energies of particles and interparticle energies of Attraction. • Kinetic- depends on temp, tend to keep particles apart and moving • Interparticle- force drawing particles together

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