Topic 3 Thermal physics
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8 terms
Terms | Definitions |
|---|---|
 intermolecular forces | forces that hold together molecules |
| internal energy | total energy the molecules possess - kinetic + potential |
| temperature | measure of the average kinetic energy of the molecules in a substance |
| solids | fixed volume and shape stronger intermolecular bonds, molecules in fixed position |
| liquids | fixed volume, shape can change molecules not in fixed positions, strong forces, vibrating |
| gases | no fixed volume, no fixed shape molecules not fixed position, weak forcest |
| heat | microscopic energy transfer |
| work | macroscopic energy transfer - force moving through a distance |
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