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Chem121 Final

Heat measured under the conditions of constant pressure Enthalpy
___ calorie of heat is required to raise 1.0 gram of water 1.0 degree C 1.0
1.0 calorie of energy is equal to 4.184 Joules of energy
Enthalpy of an endothermic reaction where a solid becomes a liquid Fusion
Change in Enthalpy = ____ - _____ Hfinal - Hinitial
H is ___ and a ____ ____. extensive, state function
Gases are composed of ___ ___ particles. widely separated
Gases are ___ compressible. easily
The term given for the gaseous states of materials that are normally liquid or solid. Vapor
Gas particles are treated as _______________________________. hard spheres with no internal structure
All energy of gas particles is _____. kinetic
Energy of motion Kinetic energy
There is no ____ energy in gases. potential
Gas particles are in ___ ____ with completely randomized directions of motion. constant motion
Gas particle speeds increase with ____. temperature
Force/area = Pressure
All gas particle collisions are ____. elastic
1 bar = ____ 10^5 Pascals
If a balloon is not expanding or contracting, external pressure and internal pressure are ____. equal
The density of air at sea level 1.00 atm
The inventor of the mercury barometer Torricelli
1.00 atm = ___ Torr 760
1.00 atm = ____ mm H20 10,330
1 Food Calorie = ____ 1000 calories or a kilocalorie
If the change in enthalpy is negative, the reaction is ____. Exothermic
If the change in enthalpy is positive, the reaction is ___. Endothermic
Volatile materials have ____. vapor pressure
Nonvolatile materials have ____. no vapor pressure
Absolute Zero = ____ C -273.15 C
Absolute Zero = ____ F -459.67 F
All gases behaving ideally occupy ___ L at STP. 22.4 L
STP: ___ C and ____ atm pressure 0 C; 1.00 atm
Enthalpy of an endothermic reaction where a liquid becomes a gas Vaporization
Enthalpy of an endothermic reaction where a solid becomes a gas Sublimation
Enthalpy of an exothermic reaction where a liquid becomes a solid Solidification
Enthalpy of an exothermic reaction where a gas becomes a liquid Condensation
Enthalpy of an exothermic reaction where a gas becomes a solid Deposition
Created by: Jade_Jenkins



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