Chp 17 Thermochemistry Vocab
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11 Terms
the threshold energy that much be overcome to produce a chemical reaction
Activation Energy
the capacity to do work or to cause heat flow
energy
refers to a reaction when energy (as heat) flows into the system
endothermic
the energy necessary to change a solid to a liquid at melting point
Enthalpy of fusion
the energy required to convert a liquid to its vapor at the boiling point
Enthalpy of vaporization
refer to a reaction where energy (as heat) flows out of the system
exothermic
energy transferred between two objects due to a temperature difference between them
Heat
the energy of a mass resulting from its motion, an object of mass moving with a velocity
Kinetic energy (KE=1/2 mv²)
energy due to position or composition/stored energy
Potential Energy (PE=mgh)
the amount of energy required to elevate the temperature of one gram of a substance one degree Celsius
Specific Heat Capacity
the measure, on any of several scales, of the average kinetic energy of the molecules in a sample of material
Temperature