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10 Cards in this Set
- Front
- Back
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Specific heat capacity
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-thermal energy required to raise the temperature for 1kg of a substance by 1K
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E = mcT
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Energy = mass x SHC x change in temp
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Energy using power pack
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Time x Current x Voltage
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Specific heat capacity equation
Temperature time graph |
c = IV/ m x 1/gradient
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Measuring temperature of the flame
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-lose energy quickly --> large difference in temp to surroundings
-temp of beaker, polysterene and air increases -nut might not be at thermal equilibrium |
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Specific latent heat
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-energy required per unit mass (1kg) to change the phase of a substance
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latent heat of fusion
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Solid --> liquid
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latent heat of vapourisation
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Liquid --> vapour (gas)
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Vaporisation
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-molecules move against force of attraction
-in vapour distances between are further -seperation is greater in fusion --> less work done |
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Vapour vs Gas
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-vapour can turn into liquid by pressure
-gasses cannot |
