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Atomic Mass and Melting Point (1-page exploration)
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Interactive model, with minimal support
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 | Overview and Learning ObjectivesThis interactive model allows users to adjust the mass of particles and change the temperature, thereby testing for the impact of mass on melting point. |
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 | Central ConceptsKey Concept: Additional Related ConceptsPhysics/Chemistry
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 | Additional InfoAdditional Background The reason that mass has no effect is that at a given temperature all particles (atoms and molecules) have the same average kinetic energy. Melting happens with the average kinetic energy of the particles is equal to the energy required to separate the particles. This "separation energy" or potential energy, is determined by the attractive forces between the particles--van der Waals forces and any other electrostatic forces, depending on the particle. Just changing the particle mass causes no change in these forces so the temperature at which the kinetic energy overcomes the attractive potential energy is unchanged. |
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 | Activity CreditsCreated by CC Project: Molecular Workbench using Molecular Workbench |
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