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29 Cards in this Set
- Front
- Back
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Law of Conservation |
Energy can neither be created nor destroyed. It can only be transferred between the system and surroundings. |
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First Law of Thermodynamics |
In any process, the cabbage in energy of a system is equal to the heat another by the system and the work done on it. |
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Endothermic |
System absorbs hear |
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Exothermic |
System releases heat |
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Heat |
Is a form of energy transfer between two objects as a result of different temperature. |
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Calorimeter |
An insulator apparatus that contains water or liquids of any heat capacity. |
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Calorimeter |
Used to determine heat capacity of a substance |
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Calorimetry |
Measures flow of energy between system and surroundings. |
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Thermochemistry |
Branch of thermodynamics which deals with the interconversion of energy: heat and work |
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Thermochemical equation |
Chemical equation that shows the value is heat involved in reaction |
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Ethalpy |
Amount of heat absorbed or released by a chemical reaction at constant atmospheric pressure |
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Ethalpy |
Form of chemical energy |
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Chemical Kinetics |
Study of the rate of chemical reactions |
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Rate of a reaction |
The change in the concentration of a reactant or product per change in time |
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Rate Law |
Mathematical expression that shows how the rate of reaction depends on the concentration of the reactants. |
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Reaction order |
Dictates how the rate responds to variations in the concentration of the reactants |
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Method of Initial Rates |
Determines how the rate is affected by concentration by comparing the initial rates of reaction at different initial concentrations of reactants. |
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Integrated Rate Law |
Is an equation that expresses the concentrations of reactants or products as a function of time. |
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Reaction Mechanism |
A sequence of reaction steps that show how the reactants are converted into products. |
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Rate-determining step |
Dictates rate law of the reaction in reaction mechanism |
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Molecularity of the Reaction |
Indicates the number of molecules that are involved in the rate-determining step |
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The Collision Theory |
Contact between the reactants |
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Activation energy |
Must have sufficient energy during collision |
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Activation energy |
Energy barrier |
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Catalysis |
The process of speeding up a chemical reaction |
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Catalysts |
It speeds up a chemical reaction |
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Homogenous |
It is a catalyst in the same place of the reaction |
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Heterogenous |
It is a catalyst in a different phase of the reaction |
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Arrhenius Equation |
Effect of temperature on reaction rate |
