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16 Cards in this Set
- Front
- Back
- 3rd side (hint)
Thermochemistry |
Study of energy changes |
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Endothermic Reaction |
Absorbs energy |
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Exothermic Reaction |
Releases energy |
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Calorimeter |
Measures the amount of heat absorbed |
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Enthalpy |
Heat content of a system @ constant pressure |
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Joule |
SI unit for energy |
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Calorie |
Quantity of heat needed to raise 1g of H2O by 1 degree Celsius |
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Specific Heat |
Quantity of heat needed to change 1g of a substance by 1 degree Celsius |
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Heat Capacity |
Quantity of heat needed to change the temperature of an object by 1 degree Celsius |
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What are the different forms of energy? |
Nuclear, electromagnetic, electrical (light), chemical, mechanical, heat |
N.E.E.C.M.H. |
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How much energy does an energy change account for? |
ALL of the energy |
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What happens when heat is released by a chemical system? |
It's absorbed by the surroundings |
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Temperature differences are caused by... |
The transfer of heat; heat transfer |
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1 Cal = |
1 kcal |
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What does heat capacity have to do with? |
Mass & temperature |
Q=mc ΔT (measured in Joules) |
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What happens to the temperature during a phase change? |
The temperature remains constant. |
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