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9 Cards in this Set
- Front
- Back
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Internal Energy |
The sum of the random distribution of the kinetic and potential energies of the molecules within an object |
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Absolute Zero |
The lowest possible temperature an object can be. The object has minimum internal energy |
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Latent heat of fusion |
The energy needed to melt a solid at its melting point. |
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Latent heat of vaporisation |
The energy needed to vaporise a liquid.
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When a solid is heated at its melting point... |
its atoms vibrate so much that they break free from one another |
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When a liquid is cooled at its melting point... |
the molecules move slowly enough for the force bonds to lock the molecules together. Some of the latent heat released keeps the temperature at the melting point until all the liquid has solidified. |
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Sublimation |
When a solid vaporises directly when heated |
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Specific latent heat of fusion |
The energy need to change the state of unit mass of the substance from a solid to a liquid without a change in temperature. |
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Specific latent heat of vaporisation |
The energy need to change the state of unit mass of the substance from a liquid to a vapour without a change in temperature. |
