4.3.2 Internal energy and energy transfers
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9 Terms
1
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what is the internal energy of a substance
the energy stored by its particles, the sum of total kinetic and potential energys
2
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three factors that determine the temp change in a system
mass of substance being heater, specific heat capacity, energy inputted to the system
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state the equation sued to calc temp change when a substance is heated and units
Energy(J), mass (KG) SHC(J/KG/*C), temperature (*C)*
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specific heat capacity is
the amount of energy needed to increase the temperature of 1kg of a substance by 1\*C
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describe how internal energy and temperate changes when a change of state
internal energy will be increased or decreased, temp of the substance remains constant
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specific latent heat is
the amount of energy needed to change the state of 1kkg of a substance with no change in temp
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equation required to change state equation
energy required to change state= mass x Specific latent heat (j/kg)
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fusion is
solid into a liquid
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vaporisation is
liquid to a gas