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21 Cards in this Set
- Front
- Back
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Calorie
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the quantity of heat that raises the temp of 1 gram of water 1 degree C
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Specific heat
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the amount of heat required to raise the temp of a 1 gram of a specific substance 1 degree C. A substance’s resistance to temperature change.
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Law of conservation of energy
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In a chemical/physical process, energy is neither created nor destroyed
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Stored energy
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potential energy
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Calorimeter
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a device used to measure the amount of heat absorbed or released during chemical or physical processes
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Endothermic
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absorbs heat from the surroundings (example of an endothermic reaction the reaction between barium hydroxide and ammonium nitrate feels cold to your touch).
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Exothermic
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a process that loses heat to the surroundings (example of an exothermic reaction, when two substances react, the surroundings are warmed up).
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Energy change
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always involved with endo/exothermic
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System
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what you are studying in terms of the endothermic or exothermic reaction
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Thermochemistry
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the measurement of the heat change for chemical/physical processes
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Heat
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a form of energy that always flows from a warmer object to a cooler object
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Energy
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the capacity to do work (example energy is transferred from hot water to a cup. This energy is in the form of heat).
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Law of Conservation of Energy
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energy cannot be destroyed or created during a chemical reaction. It is always conserved.
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Chemical Bonds
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is where chemical potential energy is stored
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Photosynthesis is an example of
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light energy being converted to chemical energy.
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Two factors that affect the heat capacity of a substance.?
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Mass and chemical composition
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Joule
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the SI unit of heat and energy
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Q =
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heat
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C =
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specific heat (water =4.18)
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M =
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mass (grams)
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/\T =
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change in temperature
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