Agenda Today: Intermolecular Forces, Properties of Liquids: finish summary for HW KMT Independent Study assigned via google docs: complete by WED 11/4,

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Presentation transcript:

Agenda Today: Intermolecular Forces, Properties of Liquids: finish summary for HW KMT Independent Study assigned via google docs: complete by WED 11/4, THURS 11/5

Intermolecular Forces Forces of attraction between molecules (dotted lines represents attraction between water molecules)

Stations You must get to all 4 stations You must use your observations and your knowledge of intermolecular forces to come up with the definitions in the boxes

Pressure: Atmospheric Pressure=pressure exerted by the air above a surface Vapor Pressure=pressure exerted by the molecules at the surface of the liquid; (they want to escape to the gas phase) VAPOR ATMOSPHERIC

VAPOR ATMOSPHERIC Boiling point of a liquid: vapor pressure = atmospheric pressure

: VAPOR PRESSURE = ATMOSPHERIC PRESSURE =NORMAL BOILING POINT - - - STANDARD ATMOSPHERIC PRESSURE also = 1 atm : VAPOR PRESSURE = ATMOSPHERIC PRESSURE =NORMAL BOILING POINT

1. What happens to the vapor pressure of a substance when the temperature increases? IT INCREASES

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