ch 10 and d11 - Kinetic Theory(For Ideal Gases Particles in...

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: ( ) Kinetic Theory For Ideal Gases Particles in all forms of matter are in constant motion . . Gases move the fastest . 1 GASES are made of atoms or molecules . a , - the particles are small hard spheres far away from one another empty space is between the atoms or molecules . b / Particles fill any closed container and there are no attractive repulsive forces . between them . 2 . GAS PARTICLES constantly move very rapidly in straight line . a Change direction when they hit one another or other objects . 3 ALL IDEAL GAS COLLISIONS are perfectly elastic . a , they transfer thei Kinetic Energy during collisin but total Kenetic energy stays . the same GAS PRESSURE . this is the force resulting from the collisions of billions and billions of gas particles ATMOSPHERIC PRESSURE Results from air molecules colliding with objects BAROMETER Measures atmospheric pressure depends on weather : AT sea level ( ) STP standard temperature and pressure = . ( ) Atmospheric P 1 atm or 101 3 KPA or 760 mm Hg torrs CONVERTING from Celsius to Kelvin and Visa Versa = K ° + . ( ) C 273 15 No degrees with Kelvin . . ° = EX 50 0 C 323 K = - ° 252 K 21 C KELVIN TEMPERATURE - - ° ( ) 0 K 273 C Absolute Zero --> { the lowest temperature possible as all particle stop , } moving IMPOSSIBLE to REACH ( ) = , KINETIC ENERGY KE Energy of Motion INCREASES as the TEMPERATURE INCREASES What happens when you heat particles? ! They move faster : Absolute Zero there is no Heat and thus no Motion MANOMETER Atmospheric Pressure LIQUIDS , . ( Particles also move but not as fast as gases There are more attractions between the ) liquid molecules EVAPORATION If liquid particles have enough KE the ones at the surfaces break away from the surfaces ( ) ( and go into gas form Which is evaporation FAST GUYS evaporate 1 st ) VAPOR PRESSURE Think of it as pressure pushing UP from the LIQUID ATMOSPHERIC PRESSURE
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