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21 Cards in this Set
- Front
- Back
Thermodynamics |
Study of energy and transformation |
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Symbol of heat |
Q |
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Unit of heat |
Joule and calorie |
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Define calorie |
Amount of heat energy required to raise the temperature by 1 degree for 1 gram of water |
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Thermal energy is associated with... |
Motion of particles |
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Interaction energy / phase energy is associated with... |
The arrangement of particles and state not dependent on the temperature |
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Chemical potential energy is associated with... |
chemical bonds of a substance |
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The first law of thermodynamics |
Energy cannot be destroyed or created |
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Enthalpy |
System and surroundings during a chemical reaction |
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Endothermic reaction does what? |
gains |
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Exothermic does what |
lose |
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Enthalpy is. with in exothermic |
Negative |
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write all factor which affect the heat absorb/release by the subtance |
mass, change in the temperature , and speclific heat |
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what is specific heat? |
amount of heat it takes to raise the temperature of 1 g of the subtance |
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specific heat depends on…….. |
mass- and chemical composition |
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what is heat of fusion? |
it is the amount of energy needed to melt of freeze 1 g of a subtance |
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what is heat of vaporization? |
ot os the amount of energy needed to evaporation of 1 g of a substance |
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what is the value for heat of fusion of water? |
334 joule per gram |
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what is the value for heat of vaporization of water? |
2260 joules per gram |
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what is the heat content? |
stored energy of molecule present in the system |
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calorimetry |
it is the precise measurement of the heat flow into a oout of a sysatem for chemical and phycial process |