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5 Written Questions

1. same as boiling point
2. liquid --> gas when it is NOT boiling, takes place more quickly at higher temps, increased kinetic energ, allows the particles to overcome intermolecular forces to escape as a gas or vapor. high energy particles leave and low energy stay behind
3. The conversion of a liquid to a gas or vapor
4. The change of a substance from a solid in a vapor without passing through a liquid phase
5. H= heat energy in joules, m= mass in grams, Hv= Heat of Vaporization

5 Matching Questions

1. Triple Point
2. Exothermic
3. Kenetic Molecular Theory
4. Barometers
5. Boiling Point

1. a Describes the only set of conditions when all the pases can exist in equilibrium
2. b The temperature at which the vapor pressure of the liquid is just equal to the external pressure
3. c The tiny particles of matter are in constant motion
4. d Heat is leaving, freezing
5. e instruments used to measure atmospheric pressure

5 Multiple Choice Questions

1. The force exerted by a gas per unit surface area of an object
   1. Vapor Pressure
   2. Barometers
   3. Gas particles
   4. Gas Pressure
2. Insignifigant volume, no attractive forces, move rapidly in a constant motion, move in strait paths
   1. Gas Pressure
   2. Barometers
   3. Gas particles
   4. Kilopascals
3. Heat is being added or coming in, melting
   1. H=mHf
   2. Exothermic
   3. Endothermic
   4. Barometers
4. no negative temerpature, kelvin temp of a substance is directly proportional to the average kinetic energy of the particles of the substance
   1. Freezing
   2. Kilopascals
   3. Melting Point
   4. Kelvin scale
5. Gas molecules escape from a liquid in a sealed container, collide with the walls of the container & produce vapor pressure, gas molecules will niold up pressire and will start condensing back into a liquid, equililbrium forms same # of molecules vaporizing & conodensing so vapor pressure remains the same
   1. Vaporization
   2. Gas Pressure
   3. Atmospheric pressure
   4. Vapor Pressure

5 True/False Question

1. Atmospheric pressure → Gas molecules escape from a liquid in a sealed container, collide with the walls of the container & produce vapor pressure, gas molecules will niold up pressire and will start condensing back into a liquid, equililbrium forms same # of molecules vaporizing & conodensing so vapor pressure remains the same
   

   True        False

2. Normal Boiling Point → The temperature at which the vapor pressure of the liquid is just equal to the external pressure
   

   True        False

3. Latent Heat fusion → amount of heat needed to melt a substance, loosens intermolecular forces, not change the temperature
   

   True        False

4. Deposition → The conversion of a liquid to a gas or vapor
   

   True        False

5. Latent Heat of Vaporization → amount of heat neded to boil a substance, used to break intermolecular forces, not change the temperature, more energy is needed to break intermolecular forces than to loosen them, need more energy to boil than to melt
   

   True        False