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Chem121 Final
| Question | Answer |
|---|---|
| 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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